21974420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{379}}^1$

素因数の和:624

約数の個数: 48

約数和(自身を含む): 50050560

約数和(自身を除く): 28076140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 223, 260, 379, 446, 758, 892, 1115, 1516, 1895, 2230, 2899, 3790, 4460, 4927, 5798, 7580, 9854, 11596, 14495, 19708, 24635, 28990, 49270, 57980, 84517, 98540, 169034, 338068, 422585, 845170, 1098721, 1690340, 2197442, 4394884, 5493605, 10987210, 21974420]

約数ペア:

[(1, 21974420), (2, 10987210), (4, 5493605), (5, 4394884), (10, 2197442), (13, 1690340), (20, 1098721), (26, 845170), (52, 422585), (65, 338068), (130, 169034), (223, 98540), (260, 84517), (379, 57980), (446, 49270), (758, 28990), (892, 24635), (1115, 19708), (1516, 14495), (1895, 11596), (2230, 9854), (2899, 7580), (3790, 5798), (4460, 4927)]