21072975

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:161

約数の個数: 96

約数和(自身を含む): 44997120

約数和(自身を除く): 23924145

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 41, 55, 75, 77, 89, 105, 123, 165, 175, 205, 231, 267, 275, 287, 385, 445, 451, 525, 615, 623, 825, 861, 979, 1025, 1155, 1335, 1353, 1435, 1869, 1925, 2225, 2255, 2937, 3075, 3115, 3157, 3649, 4305, 4895, 5775, 6675, 6765, 6853, 7175, 9345, 9471, 10947, 11275, 14685, 15575, 15785, 18245, 20559, 21525, 24475, 25543, 33825, 34265, 40139, 46725, 47355, 54735, 73425, 76629, 78925, 91225, 102795, 120417, 127715, 171325, 200695, 236775, 273675, 280973, 383145, 513975, 602085, 638575, 842919, 1003475, 1404865, 1915725, 3010425, 4214595, 7024325, 21072975]

約数ペア:

[(1, 21072975), (3, 7024325), (5, 4214595), (7, 3010425), (11, 1915725), (15, 1404865), (21, 1003475), (25, 842919), (33, 638575), (35, 602085), (41, 513975), (55, 383145), (75, 280973), (77, 273675), (89, 236775), (105, 200695), (123, 171325), (165, 127715), (175, 120417), (205, 102795), (231, 91225), (267, 78925), (275, 76629), (287, 73425), (385, 54735), (445, 47355), (451, 46725), (525, 40139), (615, 34265), (623, 33825), (825, 25543), (861, 24475), (979, 21525), (1025, 20559), (1155, 18245), (1335, 15785), (1353, 15575), (1435, 14685), (1869, 11275), (1925, 10947), (2225, 9471), (2255, 9345), (2937, 7175), (3075, 6853), (3115, 6765), (3157, 6675), (3649, 5775), (4305, 4895)]