12991810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{73}}^1$

素因数の和:167

約数の個数: 48

約数和(自身を含む): 26237736

約数和(自身を除く): 13245926

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 73, 74, 130, 146, 185, 365, 370, 481, 730, 949, 962, 1369, 1898, 2405, 2701, 2738, 4745, 4810, 5402, 6845, 9490, 13505, 13690, 17797, 27010, 35113, 35594, 70226, 88985, 99937, 175565, 177970, 199874, 351130, 499685, 999370, 1299181, 2598362, 6495905, 12991810]

約数ペア:

[(1, 12991810), (2, 6495905), (5, 2598362), (10, 1299181), (13, 999370), (26, 499685), (37, 351130), (65, 199874), (73, 177970), (74, 175565), (130, 99937), (146, 88985), (185, 70226), (365, 35594), (370, 35113), (481, 27010), (730, 17797), (949, 13690), (962, 13505), (1369, 9490), (1898, 6845), (2405, 5402), (2701, 4810), (2738, 4745)]