221520285

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{13789}}^1$

素因数の和:13827

約数の個数: 64

約数和(自身を含む): 476582400

約数和(自身を除く): 255062115

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 51, 63, 85, 105, 119, 135, 153, 189, 255, 315, 357, 459, 595, 765, 945, 1071, 1785, 2295, 3213, 5355, 13789, 16065, 41367, 68945, 96523, 124101, 206835, 234413, 289569, 372303, 482615, 620505, 703239, 868707, 1172065, 1447845, 1640891, 1861515, 2109717, 2606121, 3516195, 4343535, 4922673, 6329151, 8204455, 10548585, 13030605, 14768019, 24613365, 31645755, 44304057, 73840095, 221520285]

約数ペア:

[(1, 221520285), (3, 73840095), (5, 44304057), (7, 31645755), (9, 24613365), (15, 14768019), (17, 13030605), (21, 10548585), (27, 8204455), (35, 6329151), (45, 4922673), (51, 4343535), (63, 3516195), (85, 2606121), (105, 2109717), (119, 1861515), (135, 1640891), (153, 1447845), (189, 1172065), (255, 868707), (315, 703239), (357, 620505), (459, 482615), (595, 372303), (765, 289569), (945, 234413), (1071, 206835), (1785, 124101), (2295, 96523), (3213, 68945), (5355, 41367), (13789, 16065)]