18639153

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:627

約数の個数: 40

約数和(自身を含む): 31006976

約数和(自身を除く): 12367823

約数列:

[1, 3, 9, 13, 27, 31, 39, 81, 93, 117, 279, 351, 403, 571, 837, 1053, 1209, 1713, 2511, 3627, 5139, 7423, 10881, 15417, 17701, 22269, 32643, 46251, 53103, 66807, 159309, 200421, 230113, 477927, 601263, 690339, 1433781, 2071017, 6213051, 18639153]

約数ペア:

[(1, 18639153), (3, 6213051), (9, 2071017), (13, 1433781), (27, 690339), (31, 601263), (39, 477927), (81, 230113), (93, 200421), (117, 159309), (279, 66807), (351, 53103), (403, 46251), (571, 32643), (837, 22269), (1053, 17701), (1209, 15417), (1713, 10881), (2511, 7423), (3627, 5139)]