20002905

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1103}}^1$

素因数の和:1158

約数の個数: 48

約数和(自身を含む): 38578176

約数和(自身を除く): 18575271

約数列:

[1, 3, 5, 9, 13, 15, 31, 39, 45, 65, 93, 117, 155, 195, 279, 403, 465, 585, 1103, 1209, 1395, 2015, 3309, 3627, 5515, 6045, 9927, 14339, 16545, 18135, 34193, 43017, 49635, 71695, 102579, 129051, 170965, 215085, 307737, 444509, 512895, 645255, 1333527, 1538685, 2222545, 4000581, 6667635, 20002905]

約数ペア:

[(1, 20002905), (3, 6667635), (5, 4000581), (9, 2222545), (13, 1538685), (15, 1333527), (31, 645255), (39, 512895), (45, 444509), (65, 307737), (93, 215085), (117, 170965), (155, 129051), (195, 102579), (279, 71695), (403, 49635), (465, 43017), (585, 34193), (1103, 18135), (1209, 16545), (1395, 14339), (2015, 9927), (3309, 6045), (3627, 5515)]