21118664

素因数分解:

$2^3\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2531}}^1$

素因数の和:2693

約数の個数: 32

約数和(自身を含む): 45576000

約数和(自身を除く): 24457336

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 149, 298, 596, 1043, 1192, 2086, 2531, 4172, 5062, 8344, 10124, 17717, 20248, 35434, 70868, 141736, 377119, 754238, 1508476, 2639833, 3016952, 5279666, 10559332, 21118664]

約数ペア:

[(1, 21118664), (2, 10559332), (4, 5279666), (7, 3016952), (8, 2639833), (14, 1508476), (28, 754238), (56, 377119), (149, 141736), (298, 70868), (596, 35434), (1043, 20248), (1192, 17717), (2086, 10124), (2531, 8344), (4172, 5062)]