21439060

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17573}}^1$

素因数の和:17643

約数の個数: 24

約数和(自身を含む): 45762696

約数和(自身を除く): 24323636

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17573, 35146, 70292, 87865, 175730, 351460, 1071953, 2143906, 4287812, 5359765, 10719530, 21439060]

約数ペア:

[(1, 21439060), (2, 10719530), (4, 5359765), (5, 4287812), (10, 2143906), (20, 1071953), (61, 351460), (122, 175730), (244, 87865), (305, 70292), (610, 35146), (1220, 17573)]