20105715

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{419}}^1\times {\mathrm{457}}^1$

素因数の和:891

約数の個数: 32

約数和(自身を含む): 36933120

約数和(自身を除く): 16827405

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 419, 457, 1257, 1371, 2095, 2285, 2933, 3199, 6285, 6855, 8799, 9597, 14665, 15995, 43995, 47985, 191483, 574449, 957415, 1340381, 2872245, 4021143, 6701905, 20105715]

約数ペア:

[(1, 20105715), (3, 6701905), (5, 4021143), (7, 2872245), (15, 1340381), (21, 957415), (35, 574449), (105, 191483), (419, 47985), (457, 43995), (1257, 15995), (1371, 14665), (2095, 9597), (2285, 8799), (2933, 6855), (3199, 6285)]