21549781

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4483}}^1$

素因数の和:4536

約数の個数: 16

約数和(自身を含む): 25827840

約数和(自身を除く): 4278059

約数列:

[1, 11, 19, 23, 209, 253, 437, 4483, 4807, 49313, 85177, 103109, 936947, 1134199, 1959071, 21549781]

約数ペア:

[(1, 21549781), (11, 1959071), (19, 1134199), (23, 936947), (209, 103109), (253, 85177), (437, 49313), (4483, 4807)]