68389240

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{3359}}^1$

素因数の和:3879

約数の個数: 32

約数和(自身を含む): 154224000

約数和(自身を除く): 85834760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 2036, 2545, 3359, 4072, 5090, 6718, 10180, 13436, 16795, 20360, 26872, 33590, 67180, 134360, 1709731, 3419462, 6838924, 8548655, 13677848, 17097310, 34194620, 68389240]

約数ペア:

[(1, 68389240), (2, 34194620), (4, 17097310), (5, 13677848), (8, 8548655), (10, 6838924), (20, 3419462), (40, 1709731), (509, 134360), (1018, 67180), (2036, 33590), (2545, 26872), (3359, 20360), (4072, 16795), (5090, 13436), (6718, 10180)]