21963903

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{491}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 33503232

約数和(自身を除く): 11539329

約数列:

[1, 3, 13, 31, 37, 39, 93, 111, 403, 481, 491, 1147, 1209, 1443, 1473, 3441, 6383, 14911, 15221, 18167, 19149, 44733, 45663, 54501, 197873, 236171, 563177, 593619, 708513, 1689531, 7321301, 21963903]

約数ペア:

[(1, 21963903), (3, 7321301), (13, 1689531), (31, 708513), (37, 593619), (39, 563177), (93, 236171), (111, 197873), (403, 54501), (481, 45663), (491, 44733), (1147, 19149), (1209, 18167), (1443, 15221), (1473, 14911), (3441, 6383)]