21285339

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{887}}^1$

素因数の和:1330

約数の個数: 16

約数和(自身を含む): 29978880

約数和(自身を除く): 8693541

約数列:

[1, 3, 19, 57, 421, 887, 1263, 2661, 7999, 16853, 23997, 50559, 373427, 1120281, 7095113, 21285339]

約数ペア:

[(1, 21285339), (3, 7095113), (19, 1120281), (57, 373427), (421, 50559), (887, 23997), (1263, 16853), (2661, 7999)]