21890456

素因数分解:

$2^3\times 7^2\times {\mathrm{55843}}^1$

素因数の和:55863

約数の個数: 24

約数和(自身を含む): 47746620

約数和(自身を除く): 25856164

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 55843, 111686, 223372, 390901, 446744, 781802, 1563604, 2736307, 3127208, 5472614, 10945228, 21890456]

約数ペア:

[(1, 21890456), (2, 10945228), (4, 5472614), (7, 3127208), (8, 2736307), (14, 1563604), (28, 781802), (49, 446744), (56, 390901), (98, 223372), (196, 111686), (392, 55843)]