21021979

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1423}}^1$

素因数の和:1530

約数の個数: 16

約数和(自身を含む): 24606720

約数和(自身を除く): 3584741

約数列:

[1, 11, 17, 79, 187, 869, 1343, 1423, 14773, 15653, 24191, 112417, 266101, 1236587, 1911089, 21021979]

約数ペア:

[(1, 21021979), (11, 1911089), (17, 1236587), (79, 266101), (187, 112417), (869, 24191), (1343, 15653), (1423, 14773)]