81316560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{389}}^1$

素因数の和:485

約数の個数: 160

約数和(自身を含む): 276232320

約数和(自身を除く): 194915760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 67, 78, 80, 104, 120, 130, 134, 156, 195, 201, 208, 240, 260, 268, 312, 335, 389, 390, 402, 520, 536, 624, 670, 778, 780, 804, 871, 1005, 1040, 1072, 1167, 1340, 1556, 1560, 1608, 1742, 1945, 2010, 2334, 2613, 2680, 3112, 3120, 3216, 3484, 3890, 4020, 4355, 4668, 5057, 5226, 5360, 5835, 6224, 6968, 7780, 8040, 8710, 9336, 10114, 10452, 11670, 13065, 13936, 15171, 15560, 16080, 17420, 18672, 20228, 20904, 23340, 25285, 26063, 26130, 30342, 31120, 34840, 40456, 41808, 46680, 50570, 52126, 52260, 60684, 69680, 75855, 78189, 80912, 93360, 101140, 104252, 104520, 121368, 130315, 151710, 156378, 202280, 208504, 209040, 242736, 260630, 303420, 312756, 338819, 390945, 404560, 417008, 521260, 606840, 625512, 677638, 781890, 1016457, 1042520, 1213680, 1251024, 1355276, 1563780, 1694095, 2032914, 2085040, 2710552, 3127560, 3388190, 4065828, 5082285, 5421104, 6255120, 6776380, 8131656, 10164570, 13552760, 16263312, 20329140, 27105520, 40658280, 81316560]

約数ペア:

[(1, 81316560), (2, 40658280), (3, 27105520), (4, 20329140), (5, 16263312), (6, 13552760), (8, 10164570), (10, 8131656), (12, 6776380), (13, 6255120), (15, 5421104), (16, 5082285), (20, 4065828), (24, 3388190), (26, 3127560), (30, 2710552), (39, 2085040), (40, 2032914), (48, 1694095), (52, 1563780), (60, 1355276), (65, 1251024), (67, 1213680), (78, 1042520), (80, 1016457), (104, 781890), (120, 677638), (130, 625512), (134, 606840), (156, 521260), (195, 417008), (201, 404560), (208, 390945), (240, 338819), (260, 312756), (268, 303420), (312, 260630), (335, 242736), (389, 209040), (390, 208504), (402, 202280), (520, 156378), (536, 151710), (624, 130315), (670, 121368), (778, 104520), (780, 104252), (804, 101140), (871, 93360), (1005, 80912), (1040, 78189), (1072, 75855), (1167, 69680), (1340, 60684), (1556, 52260), (1560, 52126), (1608, 50570), (1742, 46680), (1945, 41808), (2010, 40456), (2334, 34840), (2613, 31120), (2680, 30342), (3112, 26130), (3120, 26063), (3216, 25285), (3484, 23340), (3890, 20904), (4020, 20228), (4355, 18672), (4668, 17420), (5057, 16080), (5226, 15560), (5360, 15171), (5835, 13936), (6224, 13065), (6968, 11670), (7780, 10452), (8040, 10114), (8710, 9336)]