20569616

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{367}}^1$

素因数の和:519

約数の個数: 40

約数和(自身を含む): 41616384

約数和(自身を除く): 21046768

約数列:

[1, 2, 4, 8, 16, 31, 62, 113, 124, 226, 248, 367, 452, 496, 734, 904, 1468, 1808, 2936, 3503, 5872, 7006, 11377, 14012, 22754, 28024, 41471, 45508, 56048, 82942, 91016, 165884, 182032, 331768, 663536, 1285601, 2571202, 5142404, 10284808, 20569616]

約数ペア:

[(1, 20569616), (2, 10284808), (4, 5142404), (8, 2571202), (16, 1285601), (31, 663536), (62, 331768), (113, 182032), (124, 165884), (226, 91016), (248, 82942), (367, 56048), (452, 45508), (496, 41471), (734, 28024), (904, 22754), (1468, 14012), (1808, 11377), (2936, 7006), (3503, 5872)]