388804520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{10531}}^1$

素因数の和:10626

約数の個数: 64

約数和(自身を含む): 955463040

約数和(自身を除く): 566658520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 71, 104, 130, 142, 260, 284, 355, 520, 568, 710, 923, 1420, 1846, 2840, 3692, 4615, 7384, 9230, 10531, 18460, 21062, 36920, 42124, 52655, 84248, 105310, 136903, 210620, 273806, 421240, 547612, 684515, 747701, 1095224, 1369030, 1495402, 2738060, 2990804, 3738505, 5476120, 5981608, 7477010, 9720113, 14954020, 19440226, 29908040, 38880452, 48600565, 77760904, 97201130, 194402260, 388804520]

約数ペア:

[(1, 388804520), (2, 194402260), (4, 97201130), (5, 77760904), (8, 48600565), (10, 38880452), (13, 29908040), (20, 19440226), (26, 14954020), (40, 9720113), (52, 7477010), (65, 5981608), (71, 5476120), (104, 3738505), (130, 2990804), (142, 2738060), (260, 1495402), (284, 1369030), (355, 1095224), (520, 747701), (568, 684515), (710, 547612), (923, 421240), (1420, 273806), (1846, 210620), (2840, 136903), (3692, 105310), (4615, 84248), (7384, 52655), (9230, 42124), (10531, 36920), (18460, 21062)]