81811625

素因数分解:

$5^3\times 7^2\times {\mathrm{19}}^2\times {\mathrm{37}}^1$

素因数の和:104

約数の個数: 72

約数和(自身を含む): 128738376

約数和(自身を除く): 46926751

約数列:

[1, 5, 7, 19, 25, 35, 37, 49, 95, 125, 133, 175, 185, 245, 259, 361, 475, 665, 703, 875, 925, 931, 1225, 1295, 1805, 1813, 2375, 2527, 3325, 3515, 4625, 4655, 4921, 6125, 6475, 9025, 9065, 12635, 13357, 16625, 17575, 17689, 23275, 24605, 32375, 34447, 45125, 45325, 63175, 66785, 87875, 88445, 93499, 116375, 123025, 172235, 226625, 315875, 333925, 442225, 467495, 615125, 654493, 861175, 1669625, 2211125, 2337475, 3272465, 4305875, 11687375, 16362325, 81811625]

約数ペア:

[(1, 81811625), (5, 16362325), (7, 11687375), (19, 4305875), (25, 3272465), (35, 2337475), (37, 2211125), (49, 1669625), (95, 861175), (125, 654493), (133, 615125), (175, 467495), (185, 442225), (245, 333925), (259, 315875), (361, 226625), (475, 172235), (665, 123025), (703, 116375), (875, 93499), (925, 88445), (931, 87875), (1225, 66785), (1295, 63175), (1805, 45325), (1813, 45125), (2375, 34447), (2527, 32375), (3325, 24605), (3515, 23275), (4625, 17689), (4655, 17575), (4921, 16625), (6125, 13357), (6475, 12635), (9025, 9065)]