28128500

素因数分解:

$2^2\times 5^3\times {\mathrm{101}}^1\times {\mathrm{557}}^1$

素因数の和:677

約数の個数: 48

約数和(自身を含む): 62152272

約数和(自身を除く): 34023772

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 101, 125, 202, 250, 404, 500, 505, 557, 1010, 1114, 2020, 2228, 2525, 2785, 5050, 5570, 10100, 11140, 12625, 13925, 25250, 27850, 50500, 55700, 56257, 69625, 112514, 139250, 225028, 278500, 281285, 562570, 1125140, 1406425, 2812850, 5625700, 7032125, 14064250, 28128500]

約数ペア:

[(1, 28128500), (2, 14064250), (4, 7032125), (5, 5625700), (10, 2812850), (20, 1406425), (25, 1125140), (50, 562570), (100, 281285), (101, 278500), (125, 225028), (202, 139250), (250, 112514), (404, 69625), (500, 56257), (505, 55700), (557, 50500), (1010, 27850), (1114, 25250), (2020, 13925), (2228, 12625), (2525, 11140), (2785, 10100), (5050, 5570)]