1261891160

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{331}}^1\times {\mathrm{499}}^1$

素因数の和:1032

約数の個数: 64

約数和(自身を含む): 2868480000

約数和(自身を除く): 1606588840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 331, 382, 499, 662, 764, 955, 998, 1324, 1528, 1655, 1910, 1996, 2495, 2648, 3310, 3820, 3992, 4990, 6620, 7640, 9980, 13240, 19960, 63221, 95309, 126442, 165169, 190618, 252884, 316105, 330338, 381236, 476545, 505768, 632210, 660676, 762472, 825845, 953090, 1264420, 1321352, 1651690, 1906180, 2528840, 3303380, 3812360, 6606760, 31547279, 63094558, 126189116, 157736395, 252378232, 315472790, 630945580, 1261891160]

約数ペア:

[(1, 1261891160), (2, 630945580), (4, 315472790), (5, 252378232), (8, 157736395), (10, 126189116), (20, 63094558), (40, 31547279), (191, 6606760), (331, 3812360), (382, 3303380), (499, 2528840), (662, 1906180), (764, 1651690), (955, 1321352), (998, 1264420), (1324, 953090), (1528, 825845), (1655, 762472), (1910, 660676), (1996, 632210), (2495, 505768), (2648, 476545), (3310, 381236), (3820, 330338), (3992, 316105), (4990, 252884), (6620, 190618), (7640, 165169), (9980, 126442), (13240, 95309), (19960, 63221)]