638859987

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{550267}}^1$

素因数の和:550319

約数の個数: 16

約数和(自身を含む): 968471680

約数和(自身を除く): 329611693

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 550267, 1650801, 4952403, 14857209, 23661481, 70984443, 212953329, 638859987]

約数ペア:

[(1, 638859987), (3, 212953329), (9, 70984443), (27, 23661481), (43, 14857209), (129, 4952403), (387, 1650801), (1161, 550267)]