64550800

素因数分解:

$2^4\times 5^2\times {\mathrm{161377}}^1$

素因数の和:161395

約数の個数: 30

約数和(自身を含む): 155084258

約数和(自身を除く): 90533458

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 161377, 322754, 645508, 806885, 1291016, 1613770, 2582032, 3227540, 4034425, 6455080, 8068850, 12910160, 16137700, 32275400, 64550800]

約数ペア:

[(1, 64550800), (2, 32275400), (4, 16137700), (5, 12910160), (8, 8068850), (10, 6455080), (16, 4034425), (20, 3227540), (25, 2582032), (40, 1613770), (50, 1291016), (80, 806885), (100, 645508), (200, 322754), (400, 161377)]