20415395

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4079}}^1$

素因数の和:4115

約数の個数: 32

約数和(自身を含む): 32901120

約数和(自身を除く): 12485725

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4079, 5005, 20395, 28553, 44869, 53027, 142765, 224345, 265135, 314083, 371189, 583297, 1570415, 1855945, 2916485, 4083079, 20415395]

約数ペア:

[(1, 20415395), (5, 4083079), (7, 2916485), (11, 1855945), (13, 1570415), (35, 583297), (55, 371189), (65, 314083), (77, 265135), (91, 224345), (143, 142765), (385, 53027), (455, 44869), (715, 28553), (1001, 20395), (4079, 5005)]