9920125

素因数分解:

$5^3\times {\mathrm{61}}^1\times {\mathrm{1301}}^1$

素因数の和:1377

約数の個数: 16

約数和(自身を含む): 12592944

約数和(自身を除く): 2672819

約数列:

[1, 5, 25, 61, 125, 305, 1301, 1525, 6505, 7625, 32525, 79361, 162625, 396805, 1984025, 9920125]

約数ペア:

[(1, 9920125), (5, 1984025), (25, 396805), (61, 162625), (125, 79361), (305, 32525), (1301, 7625), (1525, 6505)]