138890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:86

約数の個数: 32

約数和(自身を含む): 285120

約数和(自身を除く): 146230

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 43, 85, 86, 95, 170, 190, 215, 323, 430, 646, 731, 817, 1462, 1615, 1634, 3230, 3655, 4085, 7310, 8170, 13889, 27778, 69445, 138890]

約数ペア:

[(1, 138890), (2, 69445), (5, 27778), (10, 13889), (17, 8170), (19, 7310), (34, 4085), (38, 3655), (43, 3230), (85, 1634), (86, 1615), (95, 1462), (170, 817), (190, 731), (215, 646), (323, 430)]