20816955

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20113}}^1$

素因数の和:20147

約数の個数: 24

約数和(自身を含む): 37653408

約数和(自身を除く): 16836453

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20113, 60339, 100565, 181017, 301695, 462599, 905085, 1387797, 2312995, 4163391, 6938985, 20816955]

約数ペア:

[(1, 20816955), (3, 6938985), (5, 4163391), (9, 2312995), (15, 1387797), (23, 905085), (45, 462599), (69, 301695), (115, 181017), (207, 100565), (345, 60339), (1035, 20113)]