261232985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{971}}^1\times {\mathrm{4139}}^1$

素因数の和:5128

約数の個数: 16

約数和(自身を含む): 338022720

約数和(自身を除く): 76789735

約数列:

[1, 5, 13, 65, 971, 4139, 4855, 12623, 20695, 53807, 63115, 269035, 4018969, 20094845, 52246597, 261232985]

約数ペア:

[(1, 261232985), (5, 52246597), (13, 20094845), (65, 4018969), (971, 269035), (4139, 63115), (4855, 53807), (12623, 20695)]