308996920

素因数分解:

$2^3\times 5^1\times {\mathrm{563}}^1\times {\mathrm{13721}}^1$

素因数の和:14295

約数の個数: 32

約数和(自身を含む): 696528720

約数和(自身を除く): 387531800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 563, 1126, 2252, 2815, 4504, 5630, 11260, 13721, 22520, 27442, 54884, 68605, 109768, 137210, 274420, 548840, 7724923, 15449846, 30899692, 38624615, 61799384, 77249230, 154498460, 308996920]

約数ペア:

[(1, 308996920), (2, 154498460), (4, 77249230), (5, 61799384), (8, 38624615), (10, 30899692), (20, 15449846), (40, 7724923), (563, 548840), (1126, 274420), (2252, 137210), (2815, 109768), (4504, 68605), (5630, 54884), (11260, 27442), (13721, 22520)]