20189500

素因数分解:

$2^2\times 5^3\times {\mathrm{149}}^1\times {\mathrm{271}}^1$

素因数の和:439

約数の個数: 48

約数和(自身を含む): 44553600

約数和(自身を除く): 24364100

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 149, 250, 271, 298, 500, 542, 596, 745, 1084, 1355, 1490, 2710, 2980, 3725, 5420, 6775, 7450, 13550, 14900, 18625, 27100, 33875, 37250, 40379, 67750, 74500, 80758, 135500, 161516, 201895, 403790, 807580, 1009475, 2018950, 4037900, 5047375, 10094750, 20189500]

約数ペア:

[(1, 20189500), (2, 10094750), (4, 5047375), (5, 4037900), (10, 2018950), (20, 1009475), (25, 807580), (50, 403790), (100, 201895), (125, 161516), (149, 135500), (250, 80758), (271, 74500), (298, 67750), (500, 40379), (542, 37250), (596, 33875), (745, 27100), (1084, 18625), (1355, 14900), (1490, 13550), (2710, 7450), (2980, 6775), (3725, 5420)]