81255720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1063}}^1$

素因数の和:1104

約数の個数: 192

約数和(自身を含む): 305665920

約数和(自身を除く): 224410200

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, 273, 280, 294, 312, 364, 390, 392, 420, 455, 490, 520, 546, 588, 637, 728, 735, 780, 840, 910, 980, 1063, 1092, 1176, 1274, 1365, 1470, 1560, 1820, 1911, 1960, 2126, 2184, 2548, 2730, 2940, 3185, 3189, 3640, 3822, 4252, 5096, 5315, 5460, 5880, 6370, 6378, 7441, 7644, 8504, 9555, 10630, 10920, 12740, 12756, 13819, 14882, 15288, 15945, 19110, 21260, 22323, 25480, 25512, 27638, 29764, 31890, 37205, 38220, 41457, 42520, 44646, 52087, 55276, 59528, 63780, 69095, 74410, 76440, 82914, 89292, 96733, 104174, 110552, 111615, 127560, 138190, 148820, 156261, 165828, 178584, 193466, 207285, 208348, 223230, 260435, 276380, 290199, 297640, 312522, 331656, 386932, 414570, 416696, 446460, 483665, 520870, 552760, 580398, 625044, 677131, 773864, 781305, 829140, 892920, 967330, 1041740, 1160796, 1250088, 1354262, 1450995, 1562610, 1658280, 1934660, 2031393, 2083480, 2321592, 2708524, 2901990, 3125220, 3385655, 3869320, 4062786, 5417048, 5803980, 6250440, 6771310, 8125572, 10156965, 11607960, 13542620, 16251144, 20313930, 27085240, 40627860, 81255720]

約数ペア:

[(1, 81255720), (2, 40627860), (3, 27085240), (4, 20313930), (5, 16251144), (6, 13542620), (7, 11607960), (8, 10156965), (10, 8125572), (12, 6771310), (13, 6250440), (14, 5803980), (15, 5417048), (20, 4062786), (21, 3869320), (24, 3385655), (26, 3125220), (28, 2901990), (30, 2708524), (35, 2321592), (39, 2083480), (40, 2031393), (42, 1934660), (49, 1658280), (52, 1562610), (56, 1450995), (60, 1354262), (65, 1250088), (70, 1160796), (78, 1041740), (84, 967330), (91, 892920), (98, 829140), (104, 781305), (105, 773864), (120, 677131), (130, 625044), (140, 580398), (147, 552760), (156, 520870), (168, 483665), (182, 446460), (195, 416696), (196, 414570), (210, 386932), (245, 331656), (260, 312522), (273, 297640), (280, 290199), (294, 276380), (312, 260435), (364, 223230), (390, 208348), (392, 207285), (420, 193466), (455, 178584), (490, 165828), (520, 156261), (546, 148820), (588, 138190), (637, 127560), (728, 111615), (735, 110552), (780, 104174), (840, 96733), (910, 89292), (980, 82914), (1063, 76440), (1092, 74410), (1176, 69095), (1274, 63780), (1365, 59528), (1470, 55276), (1560, 52087), (1820, 44646), (1911, 42520), (1960, 41457), (2126, 38220), (2184, 37205), (2548, 31890), (2730, 29764), (2940, 27638), (3185, 25512), (3189, 25480), (3640, 22323), (3822, 21260), (4252, 19110), (5096, 15945), (5315, 15288), (5460, 14882), (5880, 13819), (6370, 12756), (6378, 12740), (7441, 10920), (7644, 10630), (8504, 9555)]