80667500

素因数分解:

$2^2\times 5^4\times {\mathrm{41}}^1\times {\mathrm{787}}^1$

素因数の和:852

約数の個数: 60

約数和(自身を含む): 180935832

約数和(自身を除く): 100268332

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 410, 500, 625, 787, 820, 1025, 1250, 1574, 2050, 2500, 3148, 3935, 4100, 5125, 7870, 10250, 15740, 19675, 20500, 25625, 32267, 39350, 51250, 64534, 78700, 98375, 102500, 129068, 161335, 196750, 322670, 393500, 491875, 645340, 806675, 983750, 1613350, 1967500, 3226700, 4033375, 8066750, 16133500, 20166875, 40333750, 80667500]

約数ペア:

[(1, 80667500), (2, 40333750), (4, 20166875), (5, 16133500), (10, 8066750), (20, 4033375), (25, 3226700), (41, 1967500), (50, 1613350), (82, 983750), (100, 806675), (125, 645340), (164, 491875), (205, 393500), (250, 322670), (410, 196750), (500, 161335), (625, 129068), (787, 102500), (820, 98375), (1025, 78700), (1250, 64534), (1574, 51250), (2050, 39350), (2500, 32267), (3148, 25625), (3935, 20500), (4100, 19675), (5125, 15740), (7870, 10250)]