781105

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:276

約数の個数: 16

約数和(自身を含む): 1031184

約数和(自身を除く): 250079

約数列:

[1, 5, 13, 61, 65, 197, 305, 793, 985, 2561, 3965, 12017, 12805, 60085, 156221, 781105]

約数ペア:

[(1, 781105), (5, 156221), (13, 60085), (61, 12805), (65, 12017), (197, 3965), (305, 2561), (793, 985)]