20936176

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1129}}^1$

素因数の和:1217

約数の個数: 40

約数和(自身を含む): 43437200

約数和(自身を除く): 22501024

約数列:

[1, 2, 4, 8, 16, 19, 38, 61, 76, 122, 152, 244, 304, 488, 976, 1129, 1159, 2258, 2318, 4516, 4636, 9032, 9272, 18064, 18544, 21451, 42902, 68869, 85804, 137738, 171608, 275476, 343216, 550952, 1101904, 1308511, 2617022, 5234044, 10468088, 20936176]

約数ペア:

[(1, 20936176), (2, 10468088), (4, 5234044), (8, 2617022), (16, 1308511), (19, 1101904), (38, 550952), (61, 343216), (76, 275476), (122, 171608), (152, 137738), (244, 85804), (304, 68869), (488, 42902), (976, 21451), (1129, 18544), (1159, 18064), (2258, 9272), (2318, 9032), (4516, 4636)]