21789170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12893}}^1$

素因数の和:12926

約数の個数: 24

約数和(自身を含む): 42472836

約数和(自身を除く): 20683666

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12893, 25786, 64465, 128930, 167609, 335218, 838045, 1676090, 2178917, 4357834, 10894585, 21789170]

約数ペア:

[(1, 21789170), (2, 10894585), (5, 4357834), (10, 2178917), (13, 1676090), (26, 838045), (65, 335218), (130, 167609), (169, 128930), (338, 64465), (845, 25786), (1690, 12893)]