21065008

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{113}}^1\times {\mathrm{191}}^1$

素因数の和:373

約数の個数: 40

約数和(自身を含む): 42068736

約数和(自身を除く): 21003728

約数列:

[1, 2, 4, 8, 16, 61, 113, 122, 191, 226, 244, 382, 452, 488, 764, 904, 976, 1528, 1808, 3056, 6893, 11651, 13786, 21583, 23302, 27572, 43166, 46604, 55144, 86332, 93208, 110288, 172664, 186416, 345328, 1316563, 2633126, 5266252, 10532504, 21065008]

約数ペア:

[(1, 21065008), (2, 10532504), (4, 5266252), (8, 2633126), (16, 1316563), (61, 345328), (113, 186416), (122, 172664), (191, 110288), (226, 93208), (244, 86332), (382, 55144), (452, 46604), (488, 43166), (764, 27572), (904, 23302), (976, 21583), (1528, 13786), (1808, 11651), (3056, 6893)]