81239080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{156229}}^1$

素因数の和:156253

約数の個数: 32

約数和(自身を含む): 196849800

約数和(自身を除く): 115610720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 156229, 312458, 624916, 781145, 1249832, 1562290, 2030977, 3124580, 4061954, 6249160, 8123908, 10154885, 16247816, 20309770, 40619540, 81239080]

約数ペア:

[(1, 81239080), (2, 40619540), (4, 20309770), (5, 16247816), (8, 10154885), (10, 8123908), (13, 6249160), (20, 4061954), (26, 3124580), (40, 2030977), (52, 1562290), (65, 1249832), (104, 781145), (130, 624916), (260, 312458), (520, 156229)]