21999200

素因数分解:

$2^5\times 5^2\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:384

約数の個数: 72

約数和(自身を含む): 54418392

約数和(自身を除く): 32419192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 107, 160, 200, 214, 257, 400, 428, 514, 535, 800, 856, 1028, 1070, 1285, 1712, 2056, 2140, 2570, 2675, 3424, 4112, 4280, 5140, 5350, 6425, 8224, 8560, 10280, 10700, 12850, 17120, 20560, 21400, 25700, 27499, 41120, 42800, 51400, 54998, 85600, 102800, 109996, 137495, 205600, 219992, 274990, 439984, 549980, 687475, 879968, 1099960, 1374950, 2199920, 2749900, 4399840, 5499800, 10999600, 21999200]

約数ペア:

[(1, 21999200), (2, 10999600), (4, 5499800), (5, 4399840), (8, 2749900), (10, 2199920), (16, 1374950), (20, 1099960), (25, 879968), (32, 687475), (40, 549980), (50, 439984), (80, 274990), (100, 219992), (107, 205600), (160, 137495), (200, 109996), (214, 102800), (257, 85600), (400, 54998), (428, 51400), (514, 42800), (535, 41120), (800, 27499), (856, 25700), (1028, 21400), (1070, 20560), (1285, 17120), (1712, 12850), (2056, 10700), (2140, 10280), (2570, 8560), (2675, 8224), (3424, 6425), (4112, 5350), (4280, 5140)]