21162875

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{433}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 29248128

約数和(自身を除く): 8085253

約数列:

[1, 5, 17, 23, 25, 85, 115, 125, 391, 425, 433, 575, 1955, 2125, 2165, 2875, 7361, 9775, 9959, 10825, 36805, 48875, 49795, 54125, 169303, 184025, 248975, 846515, 920125, 1244875, 4232575, 21162875]

約数ペア:

[(1, 21162875), (5, 4232575), (17, 1244875), (23, 920125), (25, 846515), (85, 248975), (115, 184025), (125, 169303), (391, 54125), (425, 49795), (433, 48875), (575, 36805), (1955, 10825), (2125, 9959), (2165, 9775), (2875, 7361)]