215517419

素因数分解:

${\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{631}}^1$

素因数の和:747

約数の個数: 24

約数和(自身を含む): 244265472

約数和(自身を除く): 28748053

約数列:

[1, 13, 43, 47, 169, 559, 611, 631, 2021, 7267, 7943, 8203, 26273, 27133, 29657, 106639, 341549, 352729, 385541, 1275251, 4585477, 5012033, 16578263, 215517419]

約数ペア:

[(1, 215517419), (13, 16578263), (43, 5012033), (47, 4585477), (169, 1275251), (559, 385541), (611, 352729), (631, 341549), (2021, 106639), (7267, 29657), (7943, 27133), (8203, 26273)]