99218920

素因数分解:

$2^3\times 5^1\times {\mathrm{991}}^1\times {\mathrm{2503}}^1$

素因数の和:3505

約数の個数: 32

約数和(自身を含む): 223557120

約数和(自身を除く): 124338200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 991, 1982, 2503, 3964, 4955, 5006, 7928, 9910, 10012, 12515, 19820, 20024, 25030, 39640, 50060, 100120, 2480473, 4960946, 9921892, 12402365, 19843784, 24804730, 49609460, 99218920]

約数ペア:

[(1, 99218920), (2, 49609460), (4, 24804730), (5, 19843784), (8, 12402365), (10, 9921892), (20, 4960946), (40, 2480473), (991, 100120), (1982, 50060), (2503, 39640), (3964, 25030), (4955, 20024), (5006, 19820), (7928, 12515), (9910, 10012)]