20485275

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{3847}}^1$

素因数の和:3931

約数の個数: 24

約数和(自身を含む): 34354944

約数和(自身を除く): 13869669

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 3847, 5325, 11541, 19235, 57705, 96175, 273137, 288525, 819411, 1365685, 4097055, 6828425, 20485275]

約数ペア:

[(1, 20485275), (3, 6828425), (5, 4097055), (15, 1365685), (25, 819411), (71, 288525), (75, 273137), (213, 96175), (355, 57705), (1065, 19235), (1775, 11541), (3847, 5325)]