20103720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{263}}^1$

素因数の和:304

約数の個数: 192

約数和(自身を含む): 75841920

約数和(自身を除く): 55738200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 49, 52, 56, 60, 65, 70, 78, 84, 91, 98, 104, 105, 120, 130, 140, 147, 156, 168, 182, 195, 196, 210, 245, 260, 263, 273, 280, 294, 312, 364, 390, 392, 420, 455, 490, 520, 526, 546, 588, 637, 728, 735, 780, 789, 840, 910, 980, 1052, 1092, 1176, 1274, 1315, 1365, 1470, 1560, 1578, 1820, 1841, 1911, 1960, 2104, 2184, 2548, 2630, 2730, 2940, 3156, 3185, 3419, 3640, 3682, 3822, 3945, 5096, 5260, 5460, 5523, 5880, 6312, 6370, 6838, 7364, 7644, 7890, 9205, 9555, 10257, 10520, 10920, 11046, 12740, 12887, 13676, 14728, 15288, 15780, 17095, 18410, 19110, 20514, 22092, 23933, 25480, 25774, 27352, 27615, 31560, 34190, 36820, 38220, 38661, 41028, 44184, 47866, 51285, 51548, 55230, 64435, 68380, 71799, 73640, 76440, 77322, 82056, 95732, 102570, 103096, 110460, 119665, 128870, 136760, 143598, 154644, 167531, 191464, 193305, 205140, 220920, 239330, 257740, 287196, 309288, 335062, 358995, 386610, 410280, 478660, 502593, 515480, 574392, 670124, 717990, 773220, 837655, 957320, 1005186, 1340248, 1435980, 1546440, 1675310, 2010372, 2512965, 2871960, 3350620, 4020744, 5025930, 6701240, 10051860, 20103720]

約数ペア:

[(1, 20103720), (2, 10051860), (3, 6701240), (4, 5025930), (5, 4020744), (6, 3350620), (7, 2871960), (8, 2512965), (10, 2010372), (12, 1675310), (13, 1546440), (14, 1435980), (15, 1340248), (20, 1005186), (21, 957320), (24, 837655), (26, 773220), (28, 717990), (30, 670124), (35, 574392), (39, 515480), (40, 502593), (42, 478660), (49, 410280), (52, 386610), (56, 358995), (60, 335062), (65, 309288), (70, 287196), (78, 257740), (84, 239330), (91, 220920), (98, 205140), (104, 193305), (105, 191464), (120, 167531), (130, 154644), (140, 143598), (147, 136760), (156, 128870), (168, 119665), (182, 110460), (195, 103096), (196, 102570), (210, 95732), (245, 82056), (260, 77322), (263, 76440), (273, 73640), (280, 71799), (294, 68380), (312, 64435), (364, 55230), (390, 51548), (392, 51285), (420, 47866), (455, 44184), (490, 41028), (520, 38661), (526, 38220), (546, 36820), (588, 34190), (637, 31560), (728, 27615), (735, 27352), (780, 25774), (789, 25480), (840, 23933), (910, 22092), (980, 20514), (1052, 19110), (1092, 18410), (1176, 17095), (1274, 15780), (1315, 15288), (1365, 14728), (1470, 13676), (1560, 12887), (1578, 12740), (1820, 11046), (1841, 10920), (1911, 10520), (1960, 10257), (2104, 9555), (2184, 9205), (2548, 7890), (2630, 7644), (2730, 7364), (2940, 6838), (3156, 6370), (3185, 6312), (3419, 5880), (3640, 5523), (3682, 5460), (3822, 5260), (3945, 5096)]