20710760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1$

素因数の和:283

約数の個数: 128

約数和(自身を含む): 59616000

約数和(自身を除く): 38905240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 19, 20, 28, 34, 35, 38, 40, 56, 68, 70, 76, 85, 95, 119, 133, 136, 140, 152, 170, 190, 229, 238, 266, 280, 323, 340, 380, 458, 476, 532, 595, 646, 665, 680, 760, 916, 952, 1064, 1145, 1190, 1292, 1330, 1603, 1615, 1832, 2261, 2290, 2380, 2584, 2660, 3206, 3230, 3893, 4351, 4522, 4580, 4760, 5320, 6412, 6460, 7786, 8015, 8702, 9044, 9160, 11305, 12824, 12920, 15572, 16030, 17404, 18088, 19465, 21755, 22610, 27251, 30457, 31144, 32060, 34808, 38930, 43510, 45220, 54502, 60914, 64120, 73967, 77860, 87020, 90440, 109004, 121828, 136255, 147934, 152285, 155720, 174040, 218008, 243656, 272510, 295868, 304570, 369835, 517769, 545020, 591736, 609140, 739670, 1035538, 1090040, 1218280, 1479340, 2071076, 2588845, 2958680, 4142152, 5177690, 10355380, 20710760]

約数ペア:

[(1, 20710760), (2, 10355380), (4, 5177690), (5, 4142152), (7, 2958680), (8, 2588845), (10, 2071076), (14, 1479340), (17, 1218280), (19, 1090040), (20, 1035538), (28, 739670), (34, 609140), (35, 591736), (38, 545020), (40, 517769), (56, 369835), (68, 304570), (70, 295868), (76, 272510), (85, 243656), (95, 218008), (119, 174040), (133, 155720), (136, 152285), (140, 147934), (152, 136255), (170, 121828), (190, 109004), (229, 90440), (238, 87020), (266, 77860), (280, 73967), (323, 64120), (340, 60914), (380, 54502), (458, 45220), (476, 43510), (532, 38930), (595, 34808), (646, 32060), (665, 31144), (680, 30457), (760, 27251), (916, 22610), (952, 21755), (1064, 19465), (1145, 18088), (1190, 17404), (1292, 16030), (1330, 15572), (1603, 12920), (1615, 12824), (1832, 11305), (2261, 9160), (2290, 9044), (2380, 8702), (2584, 8015), (2660, 7786), (3206, 6460), (3230, 6412), (3893, 5320), (4351, 4760), (4522, 4580)]