21123994

素因数分解:

$2^1\times {\mathrm{113}}^1\times {\mathrm{151}}^1\times {\mathrm{619}}^1$

素因数の和:885

約数の個数: 16

約数和(自身を含む): 32230080

約数和(自身を除く): 11106086

約数列:

[1, 2, 113, 151, 226, 302, 619, 1238, 17063, 34126, 69947, 93469, 139894, 186938, 10561997, 21123994]

約数ペア:

[(1, 21123994), (2, 10561997), (113, 186938), (151, 139894), (226, 93469), (302, 69947), (619, 34126), (1238, 17063)]