20274992

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{997}}^1$

素因数の和:1077

約数の個数: 40

約数和(自身を含む): 41580672

約数和(自身を除く): 21305680

約数列:

[1, 2, 4, 8, 16, 31, 41, 62, 82, 124, 164, 248, 328, 496, 656, 997, 1271, 1994, 2542, 3988, 5084, 7976, 10168, 15952, 20336, 30907, 40877, 61814, 81754, 123628, 163508, 247256, 327016, 494512, 654032, 1267187, 2534374, 5068748, 10137496, 20274992]

約数ペア:

[(1, 20274992), (2, 10137496), (4, 5068748), (8, 2534374), (16, 1267187), (31, 654032), (41, 494512), (62, 327016), (82, 247256), (124, 163508), (164, 123628), (248, 81754), (328, 61814), (496, 40877), (656, 30907), (997, 20336), (1271, 15952), (1994, 10168), (2542, 7976), (3988, 5084)]