20109310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:269

約数の個数: 48

約数和(自身を含む): 39975984

約数和(自身を除く): 19866674

約数列:

[1, 2, 5, 10, 13, 26, 65, 73, 130, 146, 163, 169, 326, 338, 365, 730, 815, 845, 949, 1630, 1690, 1898, 2119, 4238, 4745, 9490, 10595, 11899, 12337, 21190, 23798, 24674, 27547, 55094, 59495, 61685, 118990, 123370, 137735, 154687, 275470, 309374, 773435, 1546870, 2010931, 4021862, 10054655, 20109310]

約数ペア:

[(1, 20109310), (2, 10054655), (5, 4021862), (10, 2010931), (13, 1546870), (26, 773435), (65, 309374), (73, 275470), (130, 154687), (146, 137735), (163, 123370), (169, 118990), (326, 61685), (338, 59495), (365, 55094), (730, 27547), (815, 24674), (845, 23798), (949, 21190), (1630, 12337), (1690, 11899), (1898, 10595), (2119, 9490), (4238, 4745)]