397167920

素因数分解:

$2^4\times 5^1\times {\mathrm{4964599}}^1$

素因数の和:4964612

約数の個数: 20

約数和(自身を含む): 923415600

約数和(自身を除く): 526247680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4964599, 9929198, 19858396, 24822995, 39716792, 49645990, 79433584, 99291980, 198583960, 397167920]

約数ペア:

[(1, 397167920), (2, 198583960), (4, 99291980), (5, 79433584), (8, 49645990), (10, 39716792), (16, 24822995), (20, 19858396), (40, 9929198), (80, 4964599)]