15680721

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12241}}^1$

素因数の和:12312

約数の個数: 16

約数和(自身を含む): 24288128

約数和(自身を除く): 8607407

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 12241, 36723, 85687, 257061, 746701, 2240103, 5226907, 15680721]

約数ペア:

[(1, 15680721), (3, 5226907), (7, 2240103), (21, 746701), (61, 257061), (183, 85687), (427, 36723), (1281, 12241)]