20052100

素因数分解:

$2^2\times 5^2\times {\mathrm{239}}^1\times {\mathrm{839}}^1$

素因数の和:1092

約数の個数: 36

約数和(自身を含む): 43747200

約数和(自身を除く): 23695100

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 239, 478, 839, 956, 1195, 1678, 2390, 3356, 4195, 4780, 5975, 8390, 11950, 16780, 20975, 23900, 41950, 83900, 200521, 401042, 802084, 1002605, 2005210, 4010420, 5013025, 10026050, 20052100]

約数ペア:

[(1, 20052100), (2, 10026050), (4, 5013025), (5, 4010420), (10, 2005210), (20, 1002605), (25, 802084), (50, 401042), (100, 200521), (239, 83900), (478, 41950), (839, 23900), (956, 20975), (1195, 16780), (1678, 11950), (2390, 8390), (3356, 5975), (4195, 4780)]