81196400

素因数分解:

$2^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{4951}}^1$

素因数の和:5010

約数の個数: 60

約数和(自身を含む): 199872624

約数和(自身を除く): 118676224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 164, 200, 205, 328, 400, 410, 656, 820, 1025, 1640, 2050, 3280, 4100, 4951, 8200, 9902, 16400, 19804, 24755, 39608, 49510, 79216, 99020, 123775, 198040, 202991, 247550, 396080, 405982, 495100, 811964, 990200, 1014955, 1623928, 1980400, 2029910, 3247856, 4059820, 5074775, 8119640, 10149550, 16239280, 20299100, 40598200, 81196400]

約数ペア:

[(1, 81196400), (2, 40598200), (4, 20299100), (5, 16239280), (8, 10149550), (10, 8119640), (16, 5074775), (20, 4059820), (25, 3247856), (40, 2029910), (41, 1980400), (50, 1623928), (80, 1014955), (82, 990200), (100, 811964), (164, 495100), (200, 405982), (205, 396080), (328, 247550), (400, 202991), (410, 198040), (656, 123775), (820, 99020), (1025, 79216), (1640, 49510), (2050, 39608), (3280, 24755), (4100, 19804), (4951, 16400), (8200, 9902)]