21320726

素因数分解:

$2^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{9343}}^1$

素因数の和:9515

約数の個数: 16

約数和(自身を含む): 36777984

約数和(自身を除く): 15457258

約数列:

[1, 2, 7, 14, 163, 326, 1141, 2282, 9343, 18686, 65401, 130802, 1522909, 3045818, 10660363, 21320726]

約数ペア:

[(1, 21320726), (2, 10660363), (7, 3045818), (14, 1522909), (163, 130802), (326, 65401), (1141, 18686), (2282, 9343)]