21185520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2153}}^1$

素因数の和:2210

約数の個数: 80

約数和(自身を含む): 67308192

約数和(自身を除く): 46122672

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 41, 48, 60, 80, 82, 120, 123, 164, 205, 240, 246, 328, 410, 492, 615, 656, 820, 984, 1230, 1640, 1968, 2153, 2460, 3280, 4306, 4920, 6459, 8612, 9840, 10765, 12918, 17224, 21530, 25836, 32295, 34448, 43060, 51672, 64590, 86120, 88273, 103344, 129180, 172240, 176546, 258360, 264819, 353092, 441365, 516720, 529638, 706184, 882730, 1059276, 1324095, 1412368, 1765460, 2118552, 2648190, 3530920, 4237104, 5296380, 7061840, 10592760, 21185520]

約数ペア:

[(1, 21185520), (2, 10592760), (3, 7061840), (4, 5296380), (5, 4237104), (6, 3530920), (8, 2648190), (10, 2118552), (12, 1765460), (15, 1412368), (16, 1324095), (20, 1059276), (24, 882730), (30, 706184), (40, 529638), (41, 516720), (48, 441365), (60, 353092), (80, 264819), (82, 258360), (120, 176546), (123, 172240), (164, 129180), (205, 103344), (240, 88273), (246, 86120), (328, 64590), (410, 51672), (492, 43060), (615, 34448), (656, 32295), (820, 25836), (984, 21530), (1230, 17224), (1640, 12918), (1968, 10765), (2153, 9840), (2460, 8612), (3280, 6459), (4306, 4920)]