263291217

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 429649920

約数和(自身を除く): 166358703

約数列:

[1, 3, 7, 21, 41, 59, 71, 73, 123, 177, 213, 219, 287, 413, 497, 511, 861, 1239, 1491, 1533, 2419, 2911, 2993, 4189, 4307, 5183, 7257, 8733, 8979, 12567, 12921, 15549, 16933, 20377, 20951, 29323, 30149, 36281, 50799, 61131, 62853, 87969, 90447, 108843, 171749, 176587, 212503, 305797, 515247, 529761, 637509, 917391, 1202243, 1236109, 1487521, 2140579, 3606729, 3708327, 4462563, 6421737, 12537677, 37613031, 87763739, 263291217]

約数ペア:

[(1, 263291217), (3, 87763739), (7, 37613031), (21, 12537677), (41, 6421737), (59, 4462563), (71, 3708327), (73, 3606729), (123, 2140579), (177, 1487521), (213, 1236109), (219, 1202243), (287, 917391), (413, 637509), (497, 529761), (511, 515247), (861, 305797), (1239, 212503), (1491, 176587), (1533, 171749), (2419, 108843), (2911, 90447), (2993, 87969), (4189, 62853), (4307, 61131), (5183, 50799), (7257, 36281), (8733, 30149), (8979, 29323), (12567, 20951), (12921, 20377), (15549, 16933)]