1639001

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:141

約数の個数: 24

約数和(自身を含む): 2145024

約数和(自身を除く): 506023

約数列:

[1, 7, 13, 31, 49, 83, 91, 217, 403, 581, 637, 1079, 1519, 2573, 2821, 4067, 7553, 18011, 19747, 33449, 52871, 126077, 234143, 1639001]

約数ペア:

[(1, 1639001), (7, 234143), (13, 126077), (31, 52871), (49, 33449), (83, 19747), (91, 18011), (217, 7553), (403, 4067), (581, 2821), (637, 2573), (1079, 1519)]