20145285

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 16920315

約数列:

[1, 3, 5, 9, 15, 29, 43, 45, 87, 129, 145, 215, 261, 359, 387, 435, 645, 1077, 1247, 1305, 1795, 1935, 3231, 3741, 5385, 6235, 10411, 11223, 15437, 16155, 18705, 31233, 46311, 52055, 56115, 77185, 93699, 138933, 156165, 231555, 447673, 468495, 694665, 1343019, 2238365, 4029057, 6715095, 20145285]

約数ペア:

[(1, 20145285), (3, 6715095), (5, 4029057), (9, 2238365), (15, 1343019), (29, 694665), (43, 468495), (45, 447673), (87, 231555), (129, 156165), (145, 138933), (215, 93699), (261, 77185), (359, 56115), (387, 52055), (435, 46311), (645, 31233), (1077, 18705), (1247, 16155), (1305, 15437), (1795, 11223), (1935, 10411), (3231, 6235), (3741, 5385)]