21220970

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{277}}^1$

素因数の和:494

約数の個数: 32

約数和(自身を含む): 39391488

約数和(自身を除く): 18170518

約数列:

[1, 2, 5, 10, 47, 94, 163, 235, 277, 326, 470, 554, 815, 1385, 1630, 2770, 7661, 13019, 15322, 26038, 38305, 45151, 65095, 76610, 90302, 130190, 225755, 451510, 2122097, 4244194, 10610485, 21220970]

約数ペア:

[(1, 21220970), (2, 10610485), (5, 4244194), (10, 2122097), (47, 451510), (94, 225755), (163, 130190), (235, 90302), (277, 76610), (326, 65095), (470, 45151), (554, 38305), (815, 26038), (1385, 15322), (1630, 13019), (2770, 7661)]