648889370

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{787}}^1\times {\mathrm{2011}}^1$

素因数の和:2846

約数の個数: 32

約数和(自身を含む): 1198604736

約数和(自身を除く): 549715366

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 787, 1574, 2011, 3935, 4022, 7870, 10055, 20110, 32267, 64534, 82451, 161335, 164902, 322670, 412255, 824510, 1582657, 3165314, 7913285, 15826570, 64888937, 129777874, 324444685, 648889370]

約数ペア:

[(1, 648889370), (2, 324444685), (5, 129777874), (10, 64888937), (41, 15826570), (82, 7913285), (205, 3165314), (410, 1582657), (787, 824510), (1574, 412255), (2011, 322670), (3935, 164902), (4022, 161335), (7870, 82451), (10055, 64534), (20110, 32267)]