19801518

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{300023}}^1$

素因数の和:300039

約数の個数: 16

約数和(自身を含む): 43203456

約数和(自身を除く): 23401938

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 300023, 600046, 900069, 1800138, 3300253, 6600506, 9900759, 19801518]

約数ペア:

[(1, 19801518), (2, 9900759), (3, 6600506), (6, 3300253), (11, 1800138), (22, 900069), (33, 600046), (66, 300023)]