31121272

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:261

約数の個数: 96

約数和(自身を含む): 75841920

約数和(自身を除く): 44720648

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 31, 49, 52, 56, 62, 91, 98, 104, 124, 182, 196, 197, 217, 248, 364, 392, 394, 403, 434, 637, 728, 788, 806, 868, 1274, 1379, 1519, 1576, 1612, 1736, 2548, 2561, 2758, 2821, 3038, 3224, 5096, 5122, 5516, 5642, 6076, 6107, 9653, 10244, 11032, 11284, 12152, 12214, 17927, 19306, 19747, 20488, 22568, 24428, 35854, 38612, 39494, 42749, 48856, 71708, 77224, 78988, 79391, 85498, 125489, 143416, 157976, 158782, 170996, 250978, 299243, 317564, 341992, 501956, 555737, 598486, 635128, 1003912, 1111474, 1196972, 2222948, 2393944, 3890159, 4445896, 7780318, 15560636, 31121272]

約数ペア:

[(1, 31121272), (2, 15560636), (4, 7780318), (7, 4445896), (8, 3890159), (13, 2393944), (14, 2222948), (26, 1196972), (28, 1111474), (31, 1003912), (49, 635128), (52, 598486), (56, 555737), (62, 501956), (91, 341992), (98, 317564), (104, 299243), (124, 250978), (182, 170996), (196, 158782), (197, 157976), (217, 143416), (248, 125489), (364, 85498), (392, 79391), (394, 78988), (403, 77224), (434, 71708), (637, 48856), (728, 42749), (788, 39494), (806, 38612), (868, 35854), (1274, 24428), (1379, 22568), (1519, 20488), (1576, 19747), (1612, 19306), (1736, 17927), (2548, 12214), (2561, 12152), (2758, 11284), (2821, 11032), (3038, 10244), (3224, 9653), (5096, 6107), (5122, 6076), (5516, 5642)]