21678706

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1153}}^1$

素因数の和:1258

約数の個数: 32

約数和(自身を含む): 39882240

約数和(自身を除く): 18203534

約数列:

[1, 2, 7, 14, 17, 34, 79, 119, 158, 238, 553, 1106, 1153, 1343, 2306, 2686, 8071, 9401, 16142, 18802, 19601, 39202, 91087, 137207, 182174, 274414, 637609, 1275218, 1548479, 3096958, 10839353, 21678706]

約数ペア:

[(1, 21678706), (2, 10839353), (7, 3096958), (14, 1548479), (17, 1275218), (34, 637609), (79, 274414), (119, 182174), (158, 137207), (238, 91087), (553, 39202), (1106, 19601), (1153, 18802), (1343, 16142), (2306, 9401), (2686, 8071)]