28532889

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 54774720

約数和(自身を除く): 26241831

約数列:

[1, 3, 7, 9, 11, 19, 21, 33, 57, 63, 77, 99, 121, 133, 171, 197, 209, 231, 363, 399, 591, 627, 693, 847, 1089, 1197, 1379, 1463, 1773, 1881, 2167, 2299, 2541, 3743, 4137, 4389, 6501, 6897, 7623, 11229, 12411, 13167, 15169, 16093, 19503, 20691, 23837, 26201, 33687, 41173, 45507, 48279, 71511, 78603, 123519, 136521, 144837, 166859, 214533, 235809, 288211, 370557, 452903, 500577, 864633, 1358709, 1501731, 2593899, 3170321, 4076127, 9510963, 28532889]

約数ペア:

[(1, 28532889), (3, 9510963), (7, 4076127), (9, 3170321), (11, 2593899), (19, 1501731), (21, 1358709), (33, 864633), (57, 500577), (63, 452903), (77, 370557), (99, 288211), (121, 235809), (133, 214533), (171, 166859), (197, 144837), (209, 136521), (231, 123519), (363, 78603), (399, 71511), (591, 48279), (627, 45507), (693, 41173), (847, 33687), (1089, 26201), (1197, 23837), (1379, 20691), (1463, 19503), (1773, 16093), (1881, 15169), (2167, 13167), (2299, 12411), (2541, 11229), (3743, 7623), (4137, 6897), (4389, 6501)]