21383800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3449}}^1$

素因数の和:3496

約数の個数: 48

約数和(自身を含む): 51336000

約数和(自身を除く): 29952200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 3449, 6200, 6898, 13796, 17245, 27592, 34490, 68980, 86225, 106919, 137960, 172450, 213838, 344900, 427676, 534595, 689800, 855352, 1069190, 2138380, 2672975, 4276760, 5345950, 10691900, 21383800]

約数ペア:

[(1, 21383800), (2, 10691900), (4, 5345950), (5, 4276760), (8, 2672975), (10, 2138380), (20, 1069190), (25, 855352), (31, 689800), (40, 534595), (50, 427676), (62, 344900), (100, 213838), (124, 172450), (155, 137960), (200, 106919), (248, 86225), (310, 68980), (620, 34490), (775, 27592), (1240, 17245), (1550, 13796), (3100, 6898), (3449, 6200)]