21077630

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{353}}^1\times {\mathrm{853}}^1$

素因数の和:1220

約数の個数: 32

約数和(自身を含む): 43533504

約数和(自身を除く): 22455874

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 353, 706, 853, 1706, 1765, 2471, 3530, 4265, 4942, 5971, 8530, 11942, 12355, 24710, 29855, 59710, 301109, 602218, 1505545, 2107763, 3011090, 4215526, 10538815, 21077630]

約数ペア:

[(1, 21077630), (2, 10538815), (5, 4215526), (7, 3011090), (10, 2107763), (14, 1505545), (35, 602218), (70, 301109), (353, 59710), (706, 29855), (853, 24710), (1706, 12355), (1765, 11942), (2471, 8530), (3530, 5971), (4265, 4942)]