21053413206539

素因数分解:

$7^2\times {\mathrm{223}}^2\times {\mathrm{8640059}}^1$

素因数の和:8640519

約数の個数: 18

約数和(自身を含む): 24601024279260

約数和(自身を除く): 3547611072721

約数列:

[1, 7, 49, 223, 1561, 10927, 49729, 348103, 2436721, 8640059, 60480413, 423362891, 1926733157, 13487132099, 94409924693, 429661494011, 3007630458077, 21053413206539]

約数ペア:

[(1, 21053413206539), (7, 3007630458077), (49, 429661494011), (223, 94409924693), (1561, 13487132099), (10927, 1926733157), (49729, 423362891), (348103, 60480413), (2436721, 8640059)]