1388394427

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{80989}}^1$

素因数の和:81106

約数の個数: 16

約数和(自身を含む): 1658675200

約数和(自身を除く): 270280773

約数列:

[1, 7, 31, 79, 217, 553, 2449, 17143, 80989, 566923, 2510659, 6398131, 17574613, 44786917, 198342061, 1388394427]

約数ペア:

[(1, 1388394427), (7, 198342061), (31, 44786917), (79, 17574613), (217, 6398131), (553, 2510659), (2449, 566923), (17143, 80989)]