20696985

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8069}}^1$

素因数の和:8102

約数の個数: 32

約数和(自身を含む): 38736000

約数和(自身を除く): 18039015

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8069, 24207, 40345, 72621, 121035, 153311, 217863, 363105, 459933, 766555, 1089315, 1379799, 2299665, 4139397, 6898995, 20696985]

約数ペア:

[(1, 20696985), (3, 6898995), (5, 4139397), (9, 2299665), (15, 1379799), (19, 1089315), (27, 766555), (45, 459933), (57, 363105), (95, 217863), (135, 153311), (171, 121035), (285, 72621), (513, 40345), (855, 24207), (2565, 8069)]