20307800

素因数分解:

$2^3\times 5^2\times {\mathrm{59}}^1\times {\mathrm{1721}}^1$

素因数の和:1796

約数の個数: 48

約数和(自身を含む): 48043800

約数和(自身を除く): 27736000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 59, 100, 118, 200, 236, 295, 472, 590, 1180, 1475, 1721, 2360, 2950, 3442, 5900, 6884, 8605, 11800, 13768, 17210, 34420, 43025, 68840, 86050, 101539, 172100, 203078, 344200, 406156, 507695, 812312, 1015390, 2030780, 2538475, 4061560, 5076950, 10153900, 20307800]

約数ペア:

[(1, 20307800), (2, 10153900), (4, 5076950), (5, 4061560), (8, 2538475), (10, 2030780), (20, 1015390), (25, 812312), (40, 507695), (50, 406156), (59, 344200), (100, 203078), (118, 172100), (200, 101539), (236, 86050), (295, 68840), (472, 43025), (590, 34420), (1180, 17210), (1475, 13768), (1721, 11800), (2360, 8605), (2950, 6884), (3442, 5900)]