21102875

素因数分解:

$5^3\times {\mathrm{79}}^1\times {\mathrm{2137}}^1$

素因数の和:2231

約数の個数: 16

約数和(自身を含む): 26682240

約数和(自身を除く): 5579365

約数列:

[1, 5, 25, 79, 125, 395, 1975, 2137, 9875, 10685, 53425, 168823, 267125, 844115, 4220575, 21102875]

約数ペア:

[(1, 21102875), (5, 4220575), (25, 844115), (79, 267125), (125, 168823), (395, 53425), (1975, 10685), (2137, 9875)]