19964961

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{7951}}^1$

素因数の和:7994

約数の個数: 20

約数和(自身を含む): 30790144

約数和(自身を除く): 10825183

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 7951, 23853, 71559, 214677, 246481, 644031, 739443, 2218329, 6654987, 19964961]

約数ペア:

[(1, 19964961), (3, 6654987), (9, 2218329), (27, 739443), (31, 644031), (81, 246481), (93, 214677), (279, 71559), (837, 23853), (2511, 7951)]