21000620169

素因数分解:

$3^3\times {\mathrm{457}}^1\times {\mathrm{1701971}}^1$

素因数の和:1702437

約数の個数: 16

約数和(自身を含む): 31180127040

約数和(自身を除く): 10179506871

約数列:

[1, 3, 9, 27, 457, 1371, 4113, 12339, 1701971, 5105913, 15317739, 45953217, 777800747, 2333402241, 7000206723, 21000620169]

約数ペア:

[(1, 21000620169), (3, 7000206723), (9, 2333402241), (27, 777800747), (457, 45953217), (1371, 15317739), (4113, 5105913), (12339, 1701971)]