20493495

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2179}}^1$

素因数の和:2220

約数の個数: 48

約数和(自身を含む): 40809600

約数和(自身を除く): 20316105

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 2179, 3135, 6537, 9405, 10895, 19611, 23969, 32685, 41401, 71907, 98055, 119845, 124203, 207005, 215721, 359535, 372609, 455411, 621015, 1078605, 1366233, 1863045, 2277055, 4098699, 6831165, 20493495]

約数ペア:

[(1, 20493495), (3, 6831165), (5, 4098699), (9, 2277055), (11, 1863045), (15, 1366233), (19, 1078605), (33, 621015), (45, 455411), (55, 372609), (57, 359535), (95, 215721), (99, 207005), (165, 124203), (171, 119845), (209, 98055), (285, 71907), (495, 41401), (627, 32685), (855, 23969), (1045, 19611), (1881, 10895), (2179, 9405), (3135, 6537)]