28421525

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{571}}^1$

素因数の和:773

約数の個数: 24

約数和(自身を含む): 38726688

約数和(自身を除く): 10305163

約数列:

[1, 5, 11, 25, 55, 181, 275, 571, 905, 1991, 2855, 4525, 6281, 9955, 14275, 31405, 49775, 103351, 157025, 516755, 1136861, 2583775, 5684305, 28421525]

約数ペア:

[(1, 28421525), (5, 5684305), (11, 2583775), (25, 1136861), (55, 516755), (181, 157025), (275, 103351), (571, 49775), (905, 31405), (1991, 14275), (2855, 9955), (4525, 6281)]