131878509

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{1721}}^1$

素因数の和:1861

約数の個数: 32

約数和(自身を含む): 208293120

約数和(自身を除く): 76414611

約数列:

[1, 3, 7, 21, 41, 89, 123, 267, 287, 623, 861, 1721, 1869, 3649, 5163, 10947, 12047, 25543, 36141, 70561, 76629, 153169, 211683, 459507, 493927, 1072183, 1481781, 3216549, 6279929, 18839787, 43959503, 131878509]

約数ペア:

[(1, 131878509), (3, 43959503), (7, 18839787), (21, 6279929), (41, 3216549), (89, 1481781), (123, 1072183), (267, 493927), (287, 459507), (623, 211683), (861, 153169), (1721, 76629), (1869, 70561), (3649, 36141), (5163, 25543), (10947, 12047)]