66872680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{991}}^1$

素因数の和:1250

約数の個数: 64

約数和(自身を含む): 172846080

約数和(自身を除く): 105973400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 241, 280, 482, 964, 991, 1205, 1687, 1928, 1982, 2410, 3374, 3964, 4820, 4955, 6748, 6937, 7928, 8435, 9640, 9910, 13496, 13874, 16870, 19820, 27748, 33740, 34685, 39640, 55496, 67480, 69370, 138740, 238831, 277480, 477662, 955324, 1194155, 1671817, 1910648, 2388310, 3343634, 4776620, 6687268, 8359085, 9553240, 13374536, 16718170, 33436340, 66872680]

約数ペア:

[(1, 66872680), (2, 33436340), (4, 16718170), (5, 13374536), (7, 9553240), (8, 8359085), (10, 6687268), (14, 4776620), (20, 3343634), (28, 2388310), (35, 1910648), (40, 1671817), (56, 1194155), (70, 955324), (140, 477662), (241, 277480), (280, 238831), (482, 138740), (964, 69370), (991, 67480), (1205, 55496), (1687, 39640), (1928, 34685), (1982, 33740), (2410, 27748), (3374, 19820), (3964, 16870), (4820, 13874), (4955, 13496), (6748, 9910), (6937, 9640), (7928, 8435)]