21131795511

素因数分解:

$3^3\times {\mathrm{67}}^1\times {\mathrm{173}}^1\times {\mathrm{67523}}^1$

素因数の和:67772

約数の個数: 32

約数和(自身を含む): 31957758720

約数和(自身を除く): 10825963209

約数列:

[1, 3, 9, 27, 67, 173, 201, 519, 603, 1557, 1809, 4671, 11591, 34773, 67523, 104319, 202569, 312957, 607707, 1823121, 4524041, 11681479, 13572123, 35044437, 40716369, 105133311, 122149107, 315399933, 782659093, 2347977279, 7043931837, 21131795511]

約数ペア:

[(1, 21131795511), (3, 7043931837), (9, 2347977279), (27, 782659093), (67, 315399933), (173, 122149107), (201, 105133311), (519, 40716369), (603, 35044437), (1557, 13572123), (1809, 11681479), (4671, 4524041), (11591, 1823121), (34773, 607707), (67523, 312957), (104319, 202569)]