20951073

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{223}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 36201984

約数和(自身を除く): 15250911

約数列:

[1, 3, 9, 11, 13, 33, 39, 73, 99, 117, 143, 219, 223, 429, 657, 669, 803, 949, 1287, 2007, 2409, 2453, 2847, 2899, 7227, 7359, 8541, 8697, 10439, 16279, 22077, 26091, 31317, 31889, 48837, 93951, 95667, 146511, 179069, 211627, 287001, 537207, 634881, 1611621, 1904643, 2327897, 6983691, 20951073]

約数ペア:

[(1, 20951073), (3, 6983691), (9, 2327897), (11, 1904643), (13, 1611621), (33, 634881), (39, 537207), (73, 287001), (99, 211627), (117, 179069), (143, 146511), (219, 95667), (223, 93951), (429, 48837), (657, 31889), (669, 31317), (803, 26091), (949, 22077), (1287, 16279), (2007, 10439), (2409, 8697), (2453, 8541), (2847, 7359), (2899, 7227)]