21202791

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{13411}}^1$

素因数の和:13462

約数の個数: 16

約数和(自身を含む): 30901248

約数和(自身を除く): 9698457

約数列:

[1, 3, 17, 31, 51, 93, 527, 1581, 13411, 40233, 227987, 415741, 683961, 1247223, 7067597, 21202791]

約数ペア:

[(1, 21202791), (3, 7067597), (17, 1247223), (31, 683961), (51, 415741), (93, 227987), (527, 40233), (1581, 13411)]