21396400

素因数分解:

$2^4\times 5^2\times {\mathrm{149}}^1\times {\mathrm{359}}^1$

素因数の和:526

約数の個数: 60

約数和(自身を含む): 51894000

約数和(自身を除く): 30497600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 149, 200, 298, 359, 400, 596, 718, 745, 1192, 1436, 1490, 1795, 2384, 2872, 2980, 3590, 3725, 5744, 5960, 7180, 7450, 8975, 11920, 14360, 14900, 17950, 28720, 29800, 35900, 53491, 59600, 71800, 106982, 143600, 213964, 267455, 427928, 534910, 855856, 1069820, 1337275, 2139640, 2674550, 4279280, 5349100, 10698200, 21396400]

約数ペア:

[(1, 21396400), (2, 10698200), (4, 5349100), (5, 4279280), (8, 2674550), (10, 2139640), (16, 1337275), (20, 1069820), (25, 855856), (40, 534910), (50, 427928), (80, 267455), (100, 213964), (149, 143600), (200, 106982), (298, 71800), (359, 59600), (400, 53491), (596, 35900), (718, 29800), (745, 28720), (1192, 17950), (1436, 14900), (1490, 14360), (1795, 11920), (2384, 8975), (2872, 7450), (2980, 7180), (3590, 5960), (3725, 5744)]