20907380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{829}}^1$

素因数の和:948

約数の個数: 48

約数和(自身を含む): 47827920

約数和(自身を除く): 26920540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 97, 130, 194, 260, 388, 485, 829, 970, 1261, 1658, 1940, 2522, 3316, 4145, 5044, 6305, 8290, 10777, 12610, 16580, 21554, 25220, 43108, 53885, 80413, 107770, 160826, 215540, 321652, 402065, 804130, 1045369, 1608260, 2090738, 4181476, 5226845, 10453690, 20907380]

約数ペア:

[(1, 20907380), (2, 10453690), (4, 5226845), (5, 4181476), (10, 2090738), (13, 1608260), (20, 1045369), (26, 804130), (52, 402065), (65, 321652), (97, 215540), (130, 160826), (194, 107770), (260, 80413), (388, 53885), (485, 43108), (829, 25220), (970, 21554), (1261, 16580), (1658, 12610), (1940, 10777), (2522, 8290), (3316, 6305), (4145, 5044)]