51389200

素因数分解:

$2^4\times 5^2\times {\mathrm{128473}}^1$

素因数の和:128491

約数の個数: 30

約数和(自身を含む): 123463514

約数和(自身を除く): 72074314

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 128473, 256946, 513892, 642365, 1027784, 1284730, 2055568, 2569460, 3211825, 5138920, 6423650, 10277840, 12847300, 25694600, 51389200]

約数ペア:

[(1, 51389200), (2, 25694600), (4, 12847300), (5, 10277840), (8, 6423650), (10, 5138920), (16, 3211825), (20, 2569460), (25, 2055568), (40, 1284730), (50, 1027784), (80, 642365), (100, 513892), (200, 256946), (400, 128473)]