28478560

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1471}}^1$

素因数の和:1508

約数の個数: 72

約数和(自身を含む): 74003328

約数和(自身を除く): 45524768

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1210, 1471, 1760, 1936, 2420, 2942, 3872, 4840, 5884, 7355, 9680, 11768, 14710, 16181, 19360, 23536, 29420, 32362, 47072, 58840, 64724, 80905, 117680, 129448, 161810, 177991, 235360, 258896, 323620, 355982, 517792, 647240, 711964, 889955, 1294480, 1423928, 1779910, 2588960, 2847856, 3559820, 5695712, 7119640, 14239280, 28478560]

約数ペア:

[(1, 28478560), (2, 14239280), (4, 7119640), (5, 5695712), (8, 3559820), (10, 2847856), (11, 2588960), (16, 1779910), (20, 1423928), (22, 1294480), (32, 889955), (40, 711964), (44, 647240), (55, 517792), (80, 355982), (88, 323620), (110, 258896), (121, 235360), (160, 177991), (176, 161810), (220, 129448), (242, 117680), (352, 80905), (440, 64724), (484, 58840), (605, 47072), (880, 32362), (968, 29420), (1210, 23536), (1471, 19360), (1760, 16181), (1936, 14710), (2420, 11768), (2942, 9680), (3872, 7355), (4840, 5884)]