221639420

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{30869}}^1$

素因数の和:31237

約数の個数: 24

約数和(自身を含む): 466754400

約数和(自身を除く): 245114980

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 3590, 7180, 30869, 61738, 123476, 154345, 308690, 617380, 11081971, 22163942, 44327884, 55409855, 110819710, 221639420]

約数ペア:

[(1, 221639420), (2, 110819710), (4, 55409855), (5, 44327884), (10, 22163942), (20, 11081971), (359, 617380), (718, 308690), (1436, 154345), (1795, 123476), (3590, 61738), (7180, 30869)]