21581758

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{51631}}^1$

素因数の和:51663

約数の個数: 16

約数和(自身を含む): 37175040

約数和(自身を除く): 15593282

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 51631, 103262, 567941, 980989, 1135882, 1961978, 10790879, 21581758]

約数ペア:

[(1, 21581758), (2, 10790879), (11, 1961978), (19, 1135882), (22, 980989), (38, 567941), (209, 103262), (418, 51631)]