64677500

素因数分解:

$2^2\times 5^4\times {\mathrm{41}}^1\times {\mathrm{631}}^1$

素因数の和:696

約数の個数: 60

約数和(自身を含む): 145116048

約数和(自身を除く): 80438548

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 410, 500, 625, 631, 820, 1025, 1250, 1262, 2050, 2500, 2524, 3155, 4100, 5125, 6310, 10250, 12620, 15775, 20500, 25625, 25871, 31550, 51250, 51742, 63100, 78875, 102500, 103484, 129355, 157750, 258710, 315500, 394375, 517420, 646775, 788750, 1293550, 1577500, 2587100, 3233875, 6467750, 12935500, 16169375, 32338750, 64677500]

約数ペア:

[(1, 64677500), (2, 32338750), (4, 16169375), (5, 12935500), (10, 6467750), (20, 3233875), (25, 2587100), (41, 1577500), (50, 1293550), (82, 788750), (100, 646775), (125, 517420), (164, 394375), (205, 315500), (250, 258710), (410, 157750), (500, 129355), (625, 103484), (631, 102500), (820, 78875), (1025, 63100), (1250, 51742), (1262, 51250), (2050, 31550), (2500, 25871), (2524, 25625), (3155, 20500), (4100, 15775), (5125, 12620), (6310, 10250)]