820163710

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{210839}}^1$

素因数の和:211235

約数の個数: 16

約数和(自身を含む): 1480096800

約数和(自身を除く): 659933090

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 210839, 421678, 1054195, 2108390, 82016371, 164032742, 410081855, 820163710]

約数ペア:

[(1, 820163710), (2, 410081855), (5, 164032742), (10, 82016371), (389, 2108390), (778, 1054195), (1945, 421678), (3890, 210839)]