21780411

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{1367}}^1$

素因数の和:1530

約数の個数: 16

約数和(自身を含む): 29942784

約数和(自身を除く): 8162373

約数列:

[1, 3, 47, 113, 141, 339, 1367, 4101, 5311, 15933, 64249, 154471, 192747, 463413, 7260137, 21780411]

約数ペア:

[(1, 21780411), (3, 7260137), (47, 463413), (113, 192747), (141, 154471), (339, 64249), (1367, 15933), (4101, 5311)]