18628390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 20770010

約数列:

[1, 2, 5, 10, 11, 22, 23, 37, 46, 55, 74, 110, 115, 185, 199, 230, 253, 370, 398, 407, 506, 814, 851, 995, 1265, 1702, 1990, 2035, 2189, 2530, 4070, 4255, 4378, 4577, 7363, 8510, 9154, 9361, 10945, 14726, 18722, 21890, 22885, 36815, 45770, 46805, 50347, 73630, 80993, 93610, 100694, 161986, 169349, 251735, 338698, 404965, 503470, 809930, 846745, 1693490, 1862839, 3725678, 9314195, 18628390]

約数ペア:

[(1, 18628390), (2, 9314195), (5, 3725678), (10, 1862839), (11, 1693490), (22, 846745), (23, 809930), (37, 503470), (46, 404965), (55, 338698), (74, 251735), (110, 169349), (115, 161986), (185, 100694), (199, 93610), (230, 80993), (253, 73630), (370, 50347), (398, 46805), (407, 45770), (506, 36815), (814, 22885), (851, 21890), (995, 18722), (1265, 14726), (1702, 10945), (1990, 9361), (2035, 9154), (2189, 8510), (2530, 7363), (4070, 4577), (4255, 4378)]