99819640

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{2503}}^1$

素因数の和:3511

約数の個数: 32

約数和(自身を含む): 224909280

約数和(自身を除く): 125089640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1994, 2503, 3988, 4985, 5006, 7976, 9970, 10012, 12515, 19940, 20024, 25030, 39880, 50060, 100120, 2495491, 4990982, 9981964, 12477455, 19963928, 24954910, 49909820, 99819640]

約数ペア:

[(1, 99819640), (2, 49909820), (4, 24954910), (5, 19963928), (8, 12477455), (10, 9981964), (20, 4990982), (40, 2495491), (997, 100120), (1994, 50060), (2503, 39880), (3988, 25030), (4985, 20024), (5006, 19940), (7976, 12515), (9970, 10012)]