80821780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2269}}^1$

素因数の和:2428

約数の個数: 48

約数和(自身を含む): 184196880

約数和(自身を除く): 103375100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 137, 260, 274, 548, 685, 1370, 1781, 2269, 2740, 3562, 4538, 7124, 8905, 9076, 11345, 17810, 22690, 29497, 35620, 45380, 58994, 117988, 147485, 294970, 310853, 589940, 621706, 1243412, 1554265, 3108530, 4041089, 6217060, 8082178, 16164356, 20205445, 40410890, 80821780]

約数ペア:

[(1, 80821780), (2, 40410890), (4, 20205445), (5, 16164356), (10, 8082178), (13, 6217060), (20, 4041089), (26, 3108530), (52, 1554265), (65, 1243412), (130, 621706), (137, 589940), (260, 310853), (274, 294970), (548, 147485), (685, 117988), (1370, 58994), (1781, 45380), (2269, 35620), (2740, 29497), (3562, 22690), (4538, 17810), (7124, 11345), (8905, 9076)]