261489400

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{68813}}^1$

素因数の和:68848

約数の個数: 48

約数和(自身を含む): 639970200

約数和(自身を除く): 378480800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 760, 950, 1900, 3800, 68813, 137626, 275252, 344065, 550504, 688130, 1307447, 1376260, 1720325, 2614894, 2752520, 3440650, 5229788, 6537235, 6881300, 10459576, 13074470, 13762600, 26148940, 32686175, 52297880, 65372350, 130744700, 261489400]

約数ペア:

[(1, 261489400), (2, 130744700), (4, 65372350), (5, 52297880), (8, 32686175), (10, 26148940), (19, 13762600), (20, 13074470), (25, 10459576), (38, 6881300), (40, 6537235), (50, 5229788), (76, 3440650), (95, 2752520), (100, 2614894), (152, 1720325), (190, 1376260), (200, 1307447), (380, 688130), (475, 550504), (760, 344065), (950, 275252), (1900, 137626), (3800, 68813)]