21721246

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{7741}}^1$

素因数の和:7827

約数の個数: 16

約数和(自身を含む): 34560288

約数和(自身を除く): 12839042

約数列:

[1, 2, 23, 46, 61, 122, 1403, 2806, 7741, 15482, 178043, 356086, 472201, 944402, 10860623, 21721246]

約数ペア:

[(1, 21721246), (2, 10860623), (23, 944402), (46, 472201), (61, 356086), (122, 178043), (1403, 15482), (2806, 7741)]