20101123

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{409}}^1$

素因数の和:499

約数の個数: 24

約数和(自身を含む): 25239600

約数和(自身を除く): 5138477

約数列:

[1, 7, 17, 49, 59, 119, 409, 413, 833, 1003, 2863, 2891, 6953, 7021, 20041, 24131, 48671, 49147, 168917, 340697, 410227, 1182419, 2871589, 20101123]

約数ペア:

[(1, 20101123), (7, 2871589), (17, 1182419), (49, 410227), (59, 340697), (119, 168917), (409, 49147), (413, 48671), (833, 24131), (1003, 20041), (2863, 7021), (2891, 6953)]