20756515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10301}}^1$

素因数の和:10350

約数の個数: 16

約数和(自身を含む): 27691776

約数和(自身を除く): 6935261

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10301, 51505, 133913, 319331, 669565, 1596655, 4151303, 20756515]

約数ペア:

[(1, 20756515), (5, 4151303), (13, 1596655), (31, 669565), (65, 319331), (155, 133913), (403, 51505), (2015, 10301)]