20499059840

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{5147}}^1$

素因数の和:5307

約数の個数: 192

約数和(自身を含む): 57466506240

約数和(自身を除く): 36967446400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 127, 128, 140, 160, 196, 224, 245, 254, 280, 320, 392, 448, 490, 508, 560, 635, 640, 784, 889, 896, 980, 1016, 1120, 1270, 1568, 1778, 1960, 2032, 2240, 2540, 3136, 3556, 3920, 4064, 4445, 4480, 5080, 5147, 6223, 6272, 7112, 7840, 8128, 8890, 10160, 10294, 12446, 14224, 15680, 16256, 17780, 20320, 20588, 24892, 25735, 28448, 31115, 31360, 35560, 36029, 40640, 41176, 49784, 51470, 56896, 62230, 71120, 72058, 81280, 82352, 99568, 102940, 113792, 124460, 142240, 144116, 164704, 180145, 199136, 205880, 248920, 252203, 284480, 288232, 329408, 360290, 398272, 411760, 497840, 504406, 568960, 576464, 653669, 658816, 720580, 796544, 823520, 995680, 1008812, 1152928, 1261015, 1307338, 1441160, 1647040, 1991360, 2017624, 2305856, 2522030, 2614676, 2882320, 3268345, 3294080, 3982720, 4035248, 4575683, 4611712, 5044060, 5229352, 5764640, 6536690, 8070496, 9151366, 10088120, 10458704, 11529280, 13073380, 16140992, 18302732, 20176240, 20917408, 22878415, 23058560, 26146760, 32029781, 32281984, 36605464, 40352480, 41834816, 45756830, 52293520, 64059562, 73210928, 80704960, 83669632, 91513660, 104587040, 128119124, 146421856, 160148905, 161409920, 183027320, 209174080, 256238248, 292843712, 320297810, 366054640, 418348160, 512476496, 585687424, 640595620, 732109280, 1024952992, 1281191240, 1464218560, 2049905984, 2562382480, 2928437120, 4099811968, 5124764960, 10249529920, 20499059840]

約数ペア:

[(1, 20499059840), (2, 10249529920), (4, 5124764960), (5, 4099811968), (7, 2928437120), (8, 2562382480), (10, 2049905984), (14, 1464218560), (16, 1281191240), (20, 1024952992), (28, 732109280), (32, 640595620), (35, 585687424), (40, 512476496), (49, 418348160), (56, 366054640), (64, 320297810), (70, 292843712), (80, 256238248), (98, 209174080), (112, 183027320), (127, 161409920), (128, 160148905), (140, 146421856), (160, 128119124), (196, 104587040), (224, 91513660), (245, 83669632), (254, 80704960), (280, 73210928), (320, 64059562), (392, 52293520), (448, 45756830), (490, 41834816), (508, 40352480), (560, 36605464), (635, 32281984), (640, 32029781), (784, 26146760), (889, 23058560), (896, 22878415), (980, 20917408), (1016, 20176240), (1120, 18302732), (1270, 16140992), (1568, 13073380), (1778, 11529280), (1960, 10458704), (2032, 10088120), (2240, 9151366), (2540, 8070496), (3136, 6536690), (3556, 5764640), (3920, 5229352), (4064, 5044060), (4445, 4611712), (4480, 4575683), (5080, 4035248), (5147, 3982720), (6223, 3294080), (6272, 3268345), (7112, 2882320), (7840, 2614676), (8128, 2522030), (8890, 2305856), (10160, 2017624), (10294, 1991360), (12446, 1647040), (14224, 1441160), (15680, 1307338), (16256, 1261015), (17780, 1152928), (20320, 1008812), (20588, 995680), (24892, 823520), (25735, 796544), (28448, 720580), (31115, 658816), (31360, 653669), (35560, 576464), (36029, 568960), (40640, 504406), (41176, 497840), (49784, 411760), (51470, 398272), (56896, 360290), (62230, 329408), (71120, 288232), (72058, 284480), (81280, 252203), (82352, 248920), (99568, 205880), (102940, 199136), (113792, 180145), (124460, 164704), (142240, 144116)]