78468400

素因数分解:

$2^4\times 5^2\times {\mathrm{196171}}^1$

素因数の和:196189

約数の個数: 30

約数和(自身を含む): 188521292

約数和(自身を除く): 110052892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 196171, 392342, 784684, 980855, 1569368, 1961710, 3138736, 3923420, 4904275, 7846840, 9808550, 15693680, 19617100, 39234200, 78468400]

約数ペア:

[(1, 78468400), (2, 39234200), (4, 19617100), (5, 15693680), (8, 9808550), (10, 7846840), (16, 4904275), (20, 3923420), (25, 3138736), (40, 1961710), (50, 1569368), (80, 980855), (100, 784684), (200, 392342), (400, 196171)]