20989113

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{1307}}^1$

素因数の和:1464

約数の個数: 16

約数和(自身を含む): 28817856

約数和(自身を除く): 7828743

約数列:

[1, 3, 53, 101, 159, 303, 1307, 3921, 5353, 16059, 69271, 132007, 207813, 396021, 6996371, 20989113]

約数ペア:

[(1, 20989113), (3, 6996371), (53, 396021), (101, 207813), (159, 132007), (303, 69271), (1307, 16059), (3921, 5353)]