209197040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{201151}}^1$

素因数の和:201177

約数の個数: 40

約数和(自身を含む): 523799808

約数和(自身を除く): 314602768

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 201151, 402302, 804604, 1005755, 1609208, 2011510, 2614963, 3218416, 4023020, 5229926, 8046040, 10459852, 13074815, 16092080, 20919704, 26149630, 41839408, 52299260, 104598520, 209197040]

約数ペア:

[(1, 209197040), (2, 104598520), (4, 52299260), (5, 41839408), (8, 26149630), (10, 20919704), (13, 16092080), (16, 13074815), (20, 10459852), (26, 8046040), (40, 5229926), (52, 4023020), (65, 3218416), (80, 2614963), (104, 2011510), (130, 1609208), (208, 1005755), (260, 804604), (520, 402302), (1040, 201151)]