68458280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{991}}^1$

素因数の和:1170

約数の個数: 64

約数和(自身を含む): 169274880

約数和(自身を除く): 100816600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 157, 220, 314, 440, 628, 785, 991, 1256, 1570, 1727, 1982, 3140, 3454, 3964, 4955, 6280, 6908, 7928, 8635, 9910, 10901, 13816, 17270, 19820, 21802, 34540, 39640, 43604, 54505, 69080, 87208, 109010, 155587, 218020, 311174, 436040, 622348, 777935, 1244696, 1555870, 1711457, 3111740, 3422914, 6223480, 6845828, 8557285, 13691656, 17114570, 34229140, 68458280]

約数ペア:

[(1, 68458280), (2, 34229140), (4, 17114570), (5, 13691656), (8, 8557285), (10, 6845828), (11, 6223480), (20, 3422914), (22, 3111740), (40, 1711457), (44, 1555870), (55, 1244696), (88, 777935), (110, 622348), (157, 436040), (220, 311174), (314, 218020), (440, 155587), (628, 109010), (785, 87208), (991, 69080), (1256, 54505), (1570, 43604), (1727, 39640), (1982, 34540), (3140, 21802), (3454, 19820), (3964, 17270), (4955, 13816), (6280, 10901), (6908, 9910), (7928, 8635)]