1640804056

素因数分解:

$2^3\times {\mathrm{521}}^1\times {\mathrm{393667}}^1$

素因数の和:394194

約数の個数: 16

約数和(自身を含む): 3082420440

約数和(自身を除く): 1441616384

約数列:

[1, 2, 4, 8, 521, 1042, 2084, 4168, 393667, 787334, 1574668, 3149336, 205100507, 410201014, 820402028, 1640804056]

約数ペア:

[(1, 1640804056), (2, 820402028), (4, 410201014), (8, 205100507), (521, 3149336), (1042, 1574668), (2084, 787334), (4168, 393667)]