840007

素因数分解:

$7^3\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:131

約数の個数: 16

約数和(自身を含む): 1024000

約数和(自身を除く): 183993

約数列:

[1, 7, 31, 49, 79, 217, 343, 553, 1519, 2449, 3871, 10633, 17143, 27097, 120001, 840007]

約数ペア:

[(1, 840007), (7, 120001), (31, 27097), (49, 17143), (79, 10633), (217, 3871), (343, 2449), (553, 1519)]