20701920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:137

約数の個数: 192

約数和(自身を含む): 71850240

約数和(自身を除く): 51148320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 43, 48, 51, 59, 60, 68, 80, 85, 86, 96, 102, 118, 120, 129, 136, 160, 170, 172, 177, 204, 215, 236, 240, 255, 258, 272, 295, 340, 344, 354, 408, 430, 472, 480, 510, 516, 544, 590, 645, 680, 688, 708, 731, 816, 860, 885, 944, 1003, 1020, 1032, 1180, 1290, 1360, 1376, 1416, 1462, 1632, 1720, 1770, 1888, 2006, 2040, 2064, 2193, 2360, 2537, 2580, 2720, 2832, 2924, 3009, 3440, 3540, 3655, 4012, 4080, 4128, 4386, 4720, 5015, 5074, 5160, 5664, 5848, 6018, 6880, 7080, 7310, 7611, 8024, 8160, 8772, 9440, 10030, 10148, 10320, 10965, 11696, 12036, 12685, 14160, 14620, 15045, 15222, 16048, 17544, 20060, 20296, 20640, 21930, 23392, 24072, 25370, 28320, 29240, 30090, 30444, 32096, 35088, 38055, 40120, 40592, 43129, 43860, 48144, 50740, 58480, 60180, 60888, 70176, 76110, 80240, 81184, 86258, 87720, 96288, 101480, 116960, 120360, 121776, 129387, 152220, 160480, 172516, 175440, 202960, 215645, 240720, 243552, 258774, 304440, 345032, 350880, 405920, 431290, 481440, 517548, 608880, 646935, 690064, 862580, 1035096, 1217760, 1293870, 1380128, 1725160, 2070192, 2587740, 3450320, 4140384, 5175480, 6900640, 10350960, 20701920]

約数ペア:

[(1, 20701920), (2, 10350960), (3, 6900640), (4, 5175480), (5, 4140384), (6, 3450320), (8, 2587740), (10, 2070192), (12, 1725160), (15, 1380128), (16, 1293870), (17, 1217760), (20, 1035096), (24, 862580), (30, 690064), (32, 646935), (34, 608880), (40, 517548), (43, 481440), (48, 431290), (51, 405920), (59, 350880), (60, 345032), (68, 304440), (80, 258774), (85, 243552), (86, 240720), (96, 215645), (102, 202960), (118, 175440), (120, 172516), (129, 160480), (136, 152220), (160, 129387), (170, 121776), (172, 120360), (177, 116960), (204, 101480), (215, 96288), (236, 87720), (240, 86258), (255, 81184), (258, 80240), (272, 76110), (295, 70176), (340, 60888), (344, 60180), (354, 58480), (408, 50740), (430, 48144), (472, 43860), (480, 43129), (510, 40592), (516, 40120), (544, 38055), (590, 35088), (645, 32096), (680, 30444), (688, 30090), (708, 29240), (731, 28320), (816, 25370), (860, 24072), (885, 23392), (944, 21930), (1003, 20640), (1020, 20296), (1032, 20060), (1180, 17544), (1290, 16048), (1360, 15222), (1376, 15045), (1416, 14620), (1462, 14160), (1632, 12685), (1720, 12036), (1770, 11696), (1888, 10965), (2006, 10320), (2040, 10148), (2064, 10030), (2193, 9440), (2360, 8772), (2537, 8160), (2580, 8024), (2720, 7611), (2832, 7310), (2924, 7080), (3009, 6880), (3440, 6018), (3540, 5848), (3655, 5664), (4012, 5160), (4080, 5074), (4128, 5015), (4386, 4720)]