20814890

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{661}}^1$

素因数の和:782

約数の個数: 32

約数和(自身を含む): 38893824

約数和(自身を除く): 18078934

約数列:

[1, 2, 5, 10, 47, 67, 94, 134, 235, 335, 470, 661, 670, 1322, 3149, 3305, 6298, 6610, 15745, 31067, 31490, 44287, 62134, 88574, 155335, 221435, 310670, 442870, 2081489, 4162978, 10407445, 20814890]

約数ペア:

[(1, 20814890), (2, 10407445), (5, 4162978), (10, 2081489), (47, 442870), (67, 310670), (94, 221435), (134, 155335), (235, 88574), (335, 62134), (470, 44287), (661, 31490), (670, 31067), (1322, 15745), (3149, 6610), (3305, 6298)]