281607720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:196

約数の個数: 256

約数和(自身を含む): 951367680

約数和(自身を除く): 669759960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 31, 34, 40, 51, 60, 61, 62, 68, 73, 85, 93, 102, 120, 122, 124, 136, 146, 155, 170, 183, 186, 204, 219, 244, 248, 255, 292, 305, 310, 340, 365, 366, 372, 408, 438, 465, 488, 510, 527, 584, 610, 620, 680, 730, 732, 744, 876, 915, 930, 1020, 1037, 1054, 1095, 1220, 1240, 1241, 1460, 1464, 1581, 1752, 1830, 1860, 1891, 2040, 2074, 2108, 2190, 2263, 2440, 2482, 2635, 2920, 3111, 3162, 3660, 3720, 3723, 3782, 4148, 4216, 4380, 4453, 4526, 4964, 5185, 5270, 5673, 6205, 6222, 6324, 6789, 7320, 7446, 7564, 7905, 8296, 8760, 8906, 9052, 9455, 9928, 10370, 10540, 11315, 11346, 12410, 12444, 12648, 13359, 13578, 14892, 15128, 15555, 15810, 17812, 18104, 18615, 18910, 20740, 21080, 22265, 22630, 22692, 24820, 24888, 26718, 27156, 28365, 29784, 31110, 31620, 32147, 33945, 35624, 37230, 37820, 38471, 41480, 44530, 45260, 45384, 49640, 53436, 54312, 56730, 62220, 63240, 64294, 66795, 67890, 74460, 75640, 75701, 76942, 89060, 90520, 96441, 106872, 113460, 115413, 124440, 128588, 133590, 135780, 138043, 148920, 151402, 153884, 160735, 178120, 192355, 192882, 226920, 227103, 230826, 257176, 267180, 271560, 276086, 302804, 307768, 321470, 378505, 384710, 385764, 414129, 454206, 461652, 482205, 534360, 552172, 577065, 605608, 642940, 690215, 757010, 769420, 771528, 828258, 908412, 923304, 964410, 1104344, 1135515, 1154130, 1285880, 1380430, 1514020, 1538840, 1656516, 1816824, 1928820, 2070645, 2271030, 2308260, 2346731, 2760860, 3028040, 3313032, 3857640, 4141290, 4542060, 4616520, 4693462, 5521720, 7040193, 8282580, 9084120, 9386924, 11733655, 14080386, 16565160, 18773848, 23467310, 28160772, 35200965, 46934620, 56321544, 70401930, 93869240, 140803860, 281607720]

約数ペア:

[(1, 281607720), (2, 140803860), (3, 93869240), (4, 70401930), (5, 56321544), (6, 46934620), (8, 35200965), (10, 28160772), (12, 23467310), (15, 18773848), (17, 16565160), (20, 14080386), (24, 11733655), (30, 9386924), (31, 9084120), (34, 8282580), (40, 7040193), (51, 5521720), (60, 4693462), (61, 4616520), (62, 4542060), (68, 4141290), (73, 3857640), (85, 3313032), (93, 3028040), (102, 2760860), (120, 2346731), (122, 2308260), (124, 2271030), (136, 2070645), (146, 1928820), (155, 1816824), (170, 1656516), (183, 1538840), (186, 1514020), (204, 1380430), (219, 1285880), (244, 1154130), (248, 1135515), (255, 1104344), (292, 964410), (305, 923304), (310, 908412), (340, 828258), (365, 771528), (366, 769420), (372, 757010), (408, 690215), (438, 642940), (465, 605608), (488, 577065), (510, 552172), (527, 534360), (584, 482205), (610, 461652), (620, 454206), (680, 414129), (730, 385764), (732, 384710), (744, 378505), (876, 321470), (915, 307768), (930, 302804), (1020, 276086), (1037, 271560), (1054, 267180), (1095, 257176), (1220, 230826), (1240, 227103), (1241, 226920), (1460, 192882), (1464, 192355), (1581, 178120), (1752, 160735), (1830, 153884), (1860, 151402), (1891, 148920), (2040, 138043), (2074, 135780), (2108, 133590), (2190, 128588), (2263, 124440), (2440, 115413), (2482, 113460), (2635, 106872), (2920, 96441), (3111, 90520), (3162, 89060), (3660, 76942), (3720, 75701), (3723, 75640), (3782, 74460), (4148, 67890), (4216, 66795), (4380, 64294), (4453, 63240), (4526, 62220), (4964, 56730), (5185, 54312), (5270, 53436), (5673, 49640), (6205, 45384), (6222, 45260), (6324, 44530), (6789, 41480), (7320, 38471), (7446, 37820), (7564, 37230), (7905, 35624), (8296, 33945), (8760, 32147), (8906, 31620), (9052, 31110), (9455, 29784), (9928, 28365), (10370, 27156), (10540, 26718), (11315, 24888), (11346, 24820), (12410, 22692), (12444, 22630), (12648, 22265), (13359, 21080), (13578, 20740), (14892, 18910), (15128, 18615), (15555, 18104), (15810, 17812)]