21315440

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5669}}^1$

素因数の和:5729

約数の個数: 40

約数和(自身を含む): 50621760

約数和(自身を除く): 29306320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5669, 11338, 22676, 28345, 45352, 56690, 90704, 113380, 226760, 266443, 453520, 532886, 1065772, 1332215, 2131544, 2664430, 4263088, 5328860, 10657720, 21315440]

約数ペア:

[(1, 21315440), (2, 10657720), (4, 5328860), (5, 4263088), (8, 2664430), (10, 2131544), (16, 1332215), (20, 1065772), (40, 532886), (47, 453520), (80, 266443), (94, 226760), (188, 113380), (235, 90704), (376, 56690), (470, 45352), (752, 28345), (940, 22676), (1880, 11338), (3760, 5669)]