21107485

素因数分解:

$5^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{853}}^1$

素因数の和:973

約数の個数: 24

約数和(自身を含む): 29790936

約数和(自身を除く): 8683451

約数列:

[1, 5, 7, 35, 49, 101, 245, 505, 707, 853, 3535, 4265, 4949, 5971, 24745, 29855, 41797, 86153, 208985, 430765, 603071, 3015355, 4221497, 21107485]

約数ペア:

[(1, 21107485), (5, 4221497), (7, 3015355), (35, 603071), (49, 430765), (101, 208985), (245, 86153), (505, 41797), (707, 29855), (853, 24745), (3535, 5971), (4265, 4949)]