21898921

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{857}}^1$

素因数の和:992

約数の個数: 16

約数和(自身を含む): 25204608

約数和(自身を除く): 3305687

約数列:

[1, 11, 23, 101, 253, 857, 1111, 2323, 9427, 19711, 25553, 86557, 216821, 952127, 1990811, 21898921]

約数ペア:

[(1, 21898921), (11, 1990811), (23, 952127), (101, 216821), (253, 86557), (857, 25553), (1111, 19711), (2323, 9427)]