20396481

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 36126720

約数和(自身を除く): 15730239

約数列:

[1, 3, 7, 17, 19, 21, 31, 51, 57, 93, 97, 119, 133, 217, 291, 323, 357, 399, 527, 589, 651, 679, 969, 1581, 1649, 1767, 1843, 2037, 2261, 3007, 3689, 4123, 4947, 5529, 6783, 9021, 10013, 11067, 11543, 12369, 12901, 21049, 30039, 31331, 34629, 38703, 51119, 57133, 63147, 70091, 93993, 153357, 171399, 210273, 219317, 357833, 399931, 657951, 971261, 1073499, 1199793, 2913783, 6798827, 20396481]

約数ペア:

[(1, 20396481), (3, 6798827), (7, 2913783), (17, 1199793), (19, 1073499), (21, 971261), (31, 657951), (51, 399931), (57, 357833), (93, 219317), (97, 210273), (119, 171399), (133, 153357), (217, 93993), (291, 70091), (323, 63147), (357, 57133), (399, 51119), (527, 38703), (589, 34629), (651, 31331), (679, 30039), (969, 21049), (1581, 12901), (1649, 12369), (1767, 11543), (1843, 11067), (2037, 10013), (2261, 9021), (3007, 6783), (3689, 5529), (4123, 4947)]