21210101

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{1123}}^1$

素因数の和:1252

約数の個数: 16

約数和(自身を含む): 24763968

約数和(自身を除く): 3553867

約数列:

[1, 11, 17, 101, 187, 1111, 1123, 1717, 12353, 18887, 19091, 113423, 210001, 1247653, 1928191, 21210101]

約数ペア:

[(1, 21210101), (11, 1928191), (17, 1247653), (101, 210001), (187, 113423), (1111, 19091), (1123, 18887), (1717, 12353)]