21457726

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{9257}}^1$

素因数の和:9339

約数の個数: 16

約数和(自身を含む): 34439760

約数和(自身を除く): 12982034

約数列:

[1, 2, 19, 38, 61, 122, 1159, 2318, 9257, 18514, 175883, 351766, 564677, 1129354, 10728863, 21457726]

約数ペア:

[(1, 21457726), (2, 10728863), (19, 1129354), (38, 564677), (61, 351766), (122, 175883), (1159, 18514), (2318, 9257)]