21285200

素因数分解:

$2^4\times 5^2\times {\mathrm{127}}^1\times {\mathrm{419}}^1$

素因数の和:564

約数の個数: 60

約数和(自身を含む): 51663360

約数和(自身を除く): 30378160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 127, 200, 254, 400, 419, 508, 635, 838, 1016, 1270, 1676, 2032, 2095, 2540, 3175, 3352, 4190, 5080, 6350, 6704, 8380, 10160, 10475, 12700, 16760, 20950, 25400, 33520, 41900, 50800, 53213, 83800, 106426, 167600, 212852, 266065, 425704, 532130, 851408, 1064260, 1330325, 2128520, 2660650, 4257040, 5321300, 10642600, 21285200]

約数ペア:

[(1, 21285200), (2, 10642600), (4, 5321300), (5, 4257040), (8, 2660650), (10, 2128520), (16, 1330325), (20, 1064260), (25, 851408), (40, 532130), (50, 425704), (80, 266065), (100, 212852), (127, 167600), (200, 106426), (254, 83800), (400, 53213), (419, 50800), (508, 41900), (635, 33520), (838, 25400), (1016, 20950), (1270, 16760), (1676, 12700), (2032, 10475), (2095, 10160), (2540, 8380), (3175, 6704), (3352, 6350), (4190, 5080)]