20646550

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^2\times {\mathrm{491}}^1$

素因数の和:561

約数の個数: 36

約数和(自身を含む): 39853476

約数和(自身を除く): 19206926

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 145, 290, 491, 725, 841, 982, 1450, 1682, 2455, 4205, 4910, 8410, 12275, 14239, 21025, 24550, 28478, 42050, 71195, 142390, 355975, 412931, 711950, 825862, 2064655, 4129310, 10323275, 20646550]

約数ペア:

[(1, 20646550), (2, 10323275), (5, 4129310), (10, 2064655), (25, 825862), (29, 711950), (50, 412931), (58, 355975), (145, 142390), (290, 71195), (491, 42050), (725, 28478), (841, 24550), (982, 21025), (1450, 14239), (1682, 12275), (2455, 8410), (4205, 4910)]