21380086

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1487}}^1$

素因数の和:1588

約数の個数: 32

約数和(自身を含む): 39997440

約数和(自身を除く): 18617354

約数列:

[1, 2, 7, 13, 14, 26, 79, 91, 158, 182, 553, 1027, 1106, 1487, 2054, 2974, 7189, 10409, 14378, 19331, 20818, 38662, 117473, 135317, 234946, 270634, 822311, 1527149, 1644622, 3054298, 10690043, 21380086]

約数ペア:

[(1, 21380086), (2, 10690043), (7, 3054298), (13, 1644622), (14, 1527149), (26, 822311), (79, 270634), (91, 234946), (158, 135317), (182, 117473), (553, 38662), (1027, 20818), (1106, 19331), (1487, 14378), (2054, 10409), (2974, 7189)]