21083500

素因数分解:

$2^2\times 5^3\times {\mathrm{149}}^1\times {\mathrm{283}}^1$

素因数の和:451

約数の個数: 48

約数和(自身を含む): 46519200

約数和(自身を除く): 25435700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 149, 250, 283, 298, 500, 566, 596, 745, 1132, 1415, 1490, 2830, 2980, 3725, 5660, 7075, 7450, 14150, 14900, 18625, 28300, 35375, 37250, 42167, 70750, 74500, 84334, 141500, 168668, 210835, 421670, 843340, 1054175, 2108350, 4216700, 5270875, 10541750, 21083500]

約数ペア:

[(1, 21083500), (2, 10541750), (4, 5270875), (5, 4216700), (10, 2108350), (20, 1054175), (25, 843340), (50, 421670), (100, 210835), (125, 168668), (149, 141500), (250, 84334), (283, 74500), (298, 70750), (500, 42167), (566, 37250), (596, 35375), (745, 28300), (1132, 18625), (1415, 14900), (1490, 14150), (2830, 7450), (2980, 7075), (3725, 5660)]