20678450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1097}}^1$

素因数の和:1151

約数の個数: 48

約数和(自身を含む): 42887880

約数和(自身を除く): 22209430

約数列:

[1, 2, 5, 10, 13, 25, 26, 29, 50, 58, 65, 130, 145, 290, 325, 377, 650, 725, 754, 1097, 1450, 1885, 2194, 3770, 5485, 9425, 10970, 14261, 18850, 27425, 28522, 31813, 54850, 63626, 71305, 142610, 159065, 318130, 356525, 413569, 713050, 795325, 827138, 1590650, 2067845, 4135690, 10339225, 20678450]

約数ペア:

[(1, 20678450), (2, 10339225), (5, 4135690), (10, 2067845), (13, 1590650), (25, 827138), (26, 795325), (29, 713050), (50, 413569), (58, 356525), (65, 318130), (130, 159065), (145, 142610), (290, 71305), (325, 63626), (377, 54850), (650, 31813), (725, 28522), (754, 27425), (1097, 18850), (1450, 14261), (1885, 10970), (2194, 9425), (3770, 5485)]