20216576920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7118513}}^1$

素因数の和:7118595

約数の個数: 32

約数和(自身を含む): 46127970720

約数和(自身を除く): 25911393800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7118513, 14237026, 28474052, 35592565, 56948104, 71185130, 142370260, 284740520, 505414423, 1010828846, 2021657692, 2527072115, 4043315384, 5054144230, 10108288460, 20216576920]

約数ペア:

[(1, 20216576920), (2, 10108288460), (4, 5054144230), (5, 4043315384), (8, 2527072115), (10, 2021657692), (20, 1010828846), (40, 505414423), (71, 284740520), (142, 142370260), (284, 71185130), (355, 56948104), (568, 35592565), (710, 28474052), (1420, 14237026), (2840, 7118513)]