20036590

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{397}}^1$

素因数の和:521

約数の個数: 48

約数和(自身を含む): 42468192

約数和(自身を除く): 22431602

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 103, 206, 245, 397, 490, 515, 721, 794, 1030, 1442, 1985, 2779, 3605, 3970, 5047, 5558, 7210, 10094, 13895, 19453, 25235, 27790, 38906, 40891, 50470, 81782, 97265, 194530, 204455, 286237, 408910, 572474, 1431185, 2003659, 2862370, 4007318, 10018295, 20036590]

約数ペア:

[(1, 20036590), (2, 10018295), (5, 4007318), (7, 2862370), (10, 2003659), (14, 1431185), (35, 572474), (49, 408910), (70, 286237), (98, 204455), (103, 194530), (206, 97265), (245, 81782), (397, 50470), (490, 40891), (515, 38906), (721, 27790), (794, 25235), (1030, 19453), (1442, 13895), (1985, 10094), (2779, 7210), (3605, 5558), (3970, 5047)]