69990280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{42677}}^1$

素因数の和:42729

約数の個数: 32

約数和(自身を含む): 161322840

約数和(自身を除く): 91332560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 42677, 85354, 170708, 213385, 341416, 426770, 853540, 1707080, 1749757, 3499514, 6999028, 8748785, 13998056, 17497570, 34995140, 69990280]

約数ペア:

[(1, 69990280), (2, 34995140), (4, 17497570), (5, 13998056), (8, 8748785), (10, 6999028), (20, 3499514), (40, 1749757), (41, 1707080), (82, 853540), (164, 426770), (205, 341416), (328, 213385), (410, 170708), (820, 85354), (1640, 42677)]