21061859

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{347}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 28062720

約数和(自身を除く): 7000861

約数列:

[1, 7, 13, 23, 29, 91, 161, 203, 299, 347, 377, 667, 2093, 2429, 2639, 4511, 4669, 7981, 8671, 10063, 31577, 55867, 60697, 70441, 103753, 130819, 231449, 726271, 915733, 1620143, 3008837, 21061859]

約数ペア:

[(1, 21061859), (7, 3008837), (13, 1620143), (23, 915733), (29, 726271), (91, 231449), (161, 130819), (203, 103753), (299, 70441), (347, 60697), (377, 55867), (667, 31577), (2093, 10063), (2429, 8671), (2639, 7981), (4511, 4669)]