18361220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{229}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 40958400

約数和(自身を除く): 22597180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 211, 229, 380, 422, 458, 844, 916, 1055, 1145, 2110, 2290, 4009, 4220, 4351, 4580, 8018, 8702, 16036, 17404, 20045, 21755, 40090, 43510, 48319, 80180, 87020, 96638, 193276, 241595, 483190, 918061, 966380, 1836122, 3672244, 4590305, 9180610, 18361220]

約数ペア:

[(1, 18361220), (2, 9180610), (4, 4590305), (5, 3672244), (10, 1836122), (19, 966380), (20, 918061), (38, 483190), (76, 241595), (95, 193276), (190, 96638), (211, 87020), (229, 80180), (380, 48319), (422, 43510), (458, 40090), (844, 21755), (916, 20045), (1055, 17404), (1145, 16036), (2110, 8702), (2290, 8018), (4009, 4580), (4220, 4351)]