20581011

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{18899}}^1$

素因数の和:18927

約数の個数: 18

約数和(自身を含む): 32678100

約数和(自身を除く): 12097089

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 18899, 56697, 170091, 207889, 623667, 1871001, 2286779, 6860337, 20581011]

約数ペア:

[(1, 20581011), (3, 6860337), (9, 2286779), (11, 1871001), (33, 623667), (99, 207889), (121, 170091), (363, 56697), (1089, 18899)]