20172122020

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1\times {\mathrm{28909}}^1$

素因数の和:29308

約数の個数: 48

約数和(自身を含む): 42837681600

約数和(自身を除く): 22665559580

約数列:

[1, 2, 4, 5, 10, 20, 139, 251, 278, 502, 556, 695, 1004, 1255, 1390, 2510, 2780, 5020, 28909, 34889, 57818, 69778, 115636, 139556, 144545, 174445, 289090, 348890, 578180, 697780, 4018351, 7256159, 8036702, 14512318, 16073404, 20091755, 29024636, 36280795, 40183510, 72561590, 80367020, 145123180, 1008606101, 2017212202, 4034424404, 5043030505, 10086061010, 20172122020]

約数ペア:

[(1, 20172122020), (2, 10086061010), (4, 5043030505), (5, 4034424404), (10, 2017212202), (20, 1008606101), (139, 145123180), (251, 80367020), (278, 72561590), (502, 40183510), (556, 36280795), (695, 29024636), (1004, 20091755), (1255, 16073404), (1390, 14512318), (2510, 8036702), (2780, 7256159), (5020, 4018351), (28909, 697780), (34889, 578180), (57818, 348890), (69778, 289090), (115636, 174445), (139556, 144545)]