20682775880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{219749}}^1$

素因数の和:219954

約数の個数: 64

約数和(自身を含む): 50393070000

約数和(自身を除く): 29710294120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 181, 260, 362, 520, 724, 905, 1448, 1810, 2353, 3620, 4706, 7240, 9412, 11765, 18824, 23530, 47060, 94120, 219749, 439498, 878996, 1098745, 1757992, 2197490, 2856737, 4394980, 5713474, 8789960, 11426948, 14283685, 22853896, 28567370, 39774569, 57134740, 79549138, 114269480, 159098276, 198872845, 318196552, 397745690, 517069397, 795491380, 1034138794, 1590982760, 2068277588, 2585346985, 4136555176, 5170693970, 10341387940, 20682775880]

約数ペア:

[(1, 20682775880), (2, 10341387940), (4, 5170693970), (5, 4136555176), (8, 2585346985), (10, 2068277588), (13, 1590982760), (20, 1034138794), (26, 795491380), (40, 517069397), (52, 397745690), (65, 318196552), (104, 198872845), (130, 159098276), (181, 114269480), (260, 79549138), (362, 57134740), (520, 39774569), (724, 28567370), (905, 22853896), (1448, 14283685), (1810, 11426948), (2353, 8789960), (3620, 5713474), (4706, 4394980), (7240, 2856737), (9412, 2197490), (11765, 1757992), (18824, 1098745), (23530, 878996), (47060, 439498), (94120, 219749)]