19947399

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{1531}}^1$

素因数の和:1678

約数の個数: 16

約数和(自身を含む): 27502464

約数和(自身を除く): 7555065

約数列:

[1, 3, 43, 101, 129, 303, 1531, 4343, 4593, 13029, 65833, 154631, 197499, 463893, 6649133, 19947399]

約数ペア:

[(1, 19947399), (3, 6649133), (43, 463893), (101, 197499), (129, 154631), (303, 65833), (1531, 13029), (4343, 4593)]