20646670

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 43872192

約数和(自身を除く): 23225522

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 61, 85, 110, 122, 170, 181, 187, 305, 362, 374, 610, 671, 905, 935, 1037, 1342, 1810, 1870, 1991, 2074, 3077, 3355, 3982, 5185, 6154, 6710, 9955, 10370, 11041, 11407, 15385, 19910, 22082, 22814, 30770, 33847, 55205, 57035, 67694, 110410, 114070, 121451, 169235, 187697, 242902, 338470, 375394, 607255, 938485, 1214510, 1876970, 2064667, 4129334, 10323335, 20646670]

約数ペア:

[(1, 20646670), (2, 10323335), (5, 4129334), (10, 2064667), (11, 1876970), (17, 1214510), (22, 938485), (34, 607255), (55, 375394), (61, 338470), (85, 242902), (110, 187697), (122, 169235), (170, 121451), (181, 114070), (187, 110410), (305, 67694), (362, 57035), (374, 55205), (610, 33847), (671, 30770), (905, 22814), (935, 22082), (1037, 19910), (1342, 15385), (1810, 11407), (1870, 11041), (1991, 10370), (2074, 9955), (3077, 6710), (3355, 6154), (3982, 5185)]