18690790

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{64451}}^1$

素因数の和:64487

約数の個数: 16

約数和(自身を含む): 34804080

約数和(自身を除く): 16113290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 64451, 128902, 322255, 644510, 1869079, 3738158, 9345395, 18690790]

約数ペア:

[(1, 18690790), (2, 9345395), (5, 3738158), (10, 1869079), (29, 644510), (58, 322255), (145, 128902), (290, 64451)]