21172560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1877}}^1$

素因数の和:1940

約数の個数: 80

約数和(自身を含む): 67067136

約数和(自身を除く): 45894576

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 47, 48, 60, 80, 94, 120, 141, 188, 235, 240, 282, 376, 470, 564, 705, 752, 940, 1128, 1410, 1877, 1880, 2256, 2820, 3754, 3760, 5631, 5640, 7508, 9385, 11262, 11280, 15016, 18770, 22524, 28155, 30032, 37540, 45048, 56310, 75080, 88219, 90096, 112620, 150160, 176438, 225240, 264657, 352876, 441095, 450480, 529314, 705752, 882190, 1058628, 1323285, 1411504, 1764380, 2117256, 2646570, 3528760, 4234512, 5293140, 7057520, 10586280, 21172560]

約数ペア:

[(1, 21172560), (2, 10586280), (3, 7057520), (4, 5293140), (5, 4234512), (6, 3528760), (8, 2646570), (10, 2117256), (12, 1764380), (15, 1411504), (16, 1323285), (20, 1058628), (24, 882190), (30, 705752), (40, 529314), (47, 450480), (48, 441095), (60, 352876), (80, 264657), (94, 225240), (120, 176438), (141, 150160), (188, 112620), (235, 90096), (240, 88219), (282, 75080), (376, 56310), (470, 45048), (564, 37540), (705, 30032), (752, 28155), (940, 22524), (1128, 18770), (1410, 15016), (1877, 11280), (1880, 11262), (2256, 9385), (2820, 7508), (3754, 5640), (3760, 5631)]