313065980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{220469}}^1$

素因数の和:220549

約数の個数: 24

約数和(自身を含む): 666701280

約数和(自身を除く): 353635300

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 220469, 440938, 881876, 1102345, 2204690, 4409380, 15653299, 31306598, 62613196, 78266495, 156532990, 313065980]

約数ペア:

[(1, 313065980), (2, 156532990), (4, 78266495), (5, 62613196), (10, 31306598), (20, 15653299), (71, 4409380), (142, 2204690), (284, 1102345), (355, 881876), (710, 440938), (1420, 220469)]