21901187

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{227}}^1$

素因数の和:431

約数の個数: 24

約数和(自身を含む): 28071360

約数和(自身を除く): 6170173

約数列:

[1, 7, 11, 49, 77, 179, 227, 539, 1253, 1589, 1969, 2497, 8771, 11123, 13783, 17479, 40633, 96481, 122353, 284431, 446963, 1991017, 3128741, 21901187]

約数ペア:

[(1, 21901187), (7, 3128741), (11, 1991017), (49, 446963), (77, 284431), (179, 122353), (227, 96481), (539, 40633), (1253, 17479), (1589, 13783), (1969, 11123), (2497, 8771)]