21504370

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{2557}}^1$

素因数の和:2622

約数の個数: 24

約数和(自身を含む): 40104324

約数和(自身を除く): 18599954

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 841, 1682, 2557, 4205, 5114, 8410, 12785, 25570, 74153, 148306, 370765, 741530, 2150437, 4300874, 10752185, 21504370]

約数ペア:

[(1, 21504370), (2, 10752185), (5, 4300874), (10, 2150437), (29, 741530), (58, 370765), (145, 148306), (290, 74153), (841, 25570), (1682, 12785), (2557, 8410), (4205, 5114)]