20643741

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5927}}^1$

素因数の和:5982

約数の個数: 20

約数和(自身を含む): 31560672

約数和(自身を除く): 10916931

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5927, 17781, 53343, 160029, 254861, 480087, 764583, 2293749, 6881247, 20643741]

約数ペア:

[(1, 20643741), (3, 6881247), (9, 2293749), (27, 764583), (43, 480087), (81, 254861), (129, 160029), (387, 53343), (1161, 17781), (3483, 5927)]