840084920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1235419}}^1$

素因数の和:1235447

約数の個数: 32

約数和(自身を含む): 2001380400

約数和(自身を除く): 1161295480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 1235419, 2470838, 4941676, 6177095, 9883352, 12354190, 21002123, 24708380, 42004246, 49416760, 84008492, 105010615, 168016984, 210021230, 420042460, 840084920]

約数ペア:

[(1, 840084920), (2, 420042460), (4, 210021230), (5, 168016984), (8, 105010615), (10, 84008492), (17, 49416760), (20, 42004246), (34, 24708380), (40, 21002123), (68, 12354190), (85, 9883352), (136, 6177095), (170, 4941676), (340, 2470838), (680, 1235419)]