20216620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 43934688

約数和(自身を除く): 23718068

約数列:

[1, 2, 4, 5, 10, 20, 61, 73, 122, 146, 227, 244, 292, 305, 365, 454, 610, 730, 908, 1135, 1220, 1460, 2270, 4453, 4540, 8906, 13847, 16571, 17812, 22265, 27694, 33142, 44530, 55388, 66284, 69235, 82855, 89060, 138470, 165710, 276940, 331420, 1010831, 2021662, 4043324, 5054155, 10108310, 20216620]

約数ペア:

[(1, 20216620), (2, 10108310), (4, 5054155), (5, 4043324), (10, 2021662), (20, 1010831), (61, 331420), (73, 276940), (122, 165710), (146, 138470), (227, 89060), (244, 82855), (292, 69235), (305, 66284), (365, 55388), (454, 44530), (610, 33142), (730, 27694), (908, 22265), (1135, 17812), (1220, 16571), (1460, 13847), (2270, 8906), (4453, 4540)]