20409735

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31643}}^1$

素因数の和:31694

約数の個数: 16

約数和(自身を含む): 33416064

約数和(自身を除く): 13006329

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 31643, 94929, 158215, 474645, 1360649, 4081947, 6803245, 20409735]

約数ペア:

[(1, 20409735), (3, 6803245), (5, 4081947), (15, 1360649), (43, 474645), (129, 158215), (215, 94929), (645, 31643)]