1217255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:386

約数の個数: 16

約数和(自身を含む): 1604064

約数和(自身を除く): 386809

約数列:

[1, 5, 13, 61, 65, 305, 307, 793, 1535, 3965, 3991, 18727, 19955, 93635, 243451, 1217255]

約数ペア:

[(1, 1217255), (5, 243451), (13, 93635), (61, 19955), (65, 18727), (305, 3991), (307, 3965), (793, 1535)]