21002943

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{1627}}^1$

素因数の和:1974

約数の個数: 16

約数和(自身を含む): 30267776

約数和(自身を除く): 9264833

約数列:

[1, 3, 13, 39, 331, 993, 1627, 4303, 4881, 12909, 21151, 63453, 538537, 1615611, 7000981, 21002943]

約数ペア:

[(1, 21002943), (3, 7000981), (13, 1615611), (39, 538537), (331, 63453), (993, 21151), (1627, 12909), (4303, 4881)]