397828400

素因数分解:

$2^4\times 5^2\times {\mathrm{994571}}^1$

素因数の和:994589

約数の個数: 30

約数和(自身を含む): 955783692

約数和(自身を除く): 557955292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 994571, 1989142, 3978284, 4972855, 7956568, 9945710, 15913136, 19891420, 24864275, 39782840, 49728550, 79565680, 99457100, 198914200, 397828400]

約数ペア:

[(1, 397828400), (2, 198914200), (4, 99457100), (5, 79565680), (8, 49728550), (10, 39782840), (16, 24864275), (20, 19891420), (25, 15913136), (40, 9945710), (50, 7956568), (80, 4972855), (100, 3978284), (200, 1989142), (400, 994571)]