20908580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13577}}^1$

素因数の和:13604

約数の個数: 48

約数和(自身を含む): 54746496

約数和(自身を除く): 33837916

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13577, 27154, 54308, 67885, 95039, 135770, 149347, 190078, 271540, 298694, 380156, 475195, 597388, 746735, 950390, 1045429, 1493470, 1900780, 2090858, 2986940, 4181716, 5227145, 10454290, 20908580]

約数ペア:

[(1, 20908580), (2, 10454290), (4, 5227145), (5, 4181716), (7, 2986940), (10, 2090858), (11, 1900780), (14, 1493470), (20, 1045429), (22, 950390), (28, 746735), (35, 597388), (44, 475195), (55, 380156), (70, 298694), (77, 271540), (110, 190078), (140, 149347), (154, 135770), (220, 95039), (308, 67885), (385, 54308), (770, 27154), (1540, 13577)]