20118400

素因数分解:

$2^7\times 5^2\times {\mathrm{6287}}^1$

素因数の和:6311

約数の個数: 48

約数和(自身を含む): 49706640

約数和(自身を除く): 29588240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6287, 12574, 25148, 31435, 50296, 62870, 100592, 125740, 157175, 201184, 251480, 314350, 402368, 502960, 628700, 804736, 1005920, 1257400, 2011840, 2514800, 4023680, 5029600, 10059200, 20118400]

約数ペア:

[(1, 20118400), (2, 10059200), (4, 5029600), (5, 4023680), (8, 2514800), (10, 2011840), (16, 1257400), (20, 1005920), (25, 804736), (32, 628700), (40, 502960), (50, 402368), (64, 314350), (80, 251480), (100, 201184), (128, 157175), (160, 125740), (200, 100592), (320, 62870), (400, 50296), (640, 31435), (800, 25148), (1600, 12574), (3200, 6287)]