820179160

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:341

約数の個数: 128

約数和(自身を含む): 1980676800

約数和(自身を除く): 1160497640

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 61, 67, 116, 122, 134, 145, 173, 232, 244, 268, 290, 305, 335, 346, 488, 536, 580, 610, 670, 692, 865, 1160, 1220, 1340, 1384, 1730, 1769, 1943, 2440, 2680, 3460, 3538, 3886, 4087, 5017, 6920, 7076, 7772, 8174, 8845, 9715, 10034, 10553, 11591, 14152, 15544, 16348, 17690, 19430, 20068, 20435, 21106, 23182, 25085, 32696, 35380, 38860, 40136, 40870, 42212, 46364, 50170, 52765, 57955, 70760, 77720, 81740, 84424, 92728, 100340, 105530, 115910, 118523, 163480, 200680, 211060, 231820, 237046, 306037, 336139, 422120, 463640, 474092, 592615, 612074, 672278, 707051, 948184, 1185230, 1224148, 1344556, 1414102, 1530185, 1680695, 2370460, 2448296, 2689112, 2828204, 3060370, 3361390, 3535255, 4740920, 5656408, 6120740, 6722780, 7070510, 12241480, 13445560, 14141020, 20504479, 28282040, 41008958, 82017916, 102522395, 164035832, 205044790, 410089580, 820179160]

約数ペア:

[(1, 820179160), (2, 410089580), (4, 205044790), (5, 164035832), (8, 102522395), (10, 82017916), (20, 41008958), (29, 28282040), (40, 20504479), (58, 14141020), (61, 13445560), (67, 12241480), (116, 7070510), (122, 6722780), (134, 6120740), (145, 5656408), (173, 4740920), (232, 3535255), (244, 3361390), (268, 3060370), (290, 2828204), (305, 2689112), (335, 2448296), (346, 2370460), (488, 1680695), (536, 1530185), (580, 1414102), (610, 1344556), (670, 1224148), (692, 1185230), (865, 948184), (1160, 707051), (1220, 672278), (1340, 612074), (1384, 592615), (1730, 474092), (1769, 463640), (1943, 422120), (2440, 336139), (2680, 306037), (3460, 237046), (3538, 231820), (3886, 211060), (4087, 200680), (5017, 163480), (6920, 118523), (7076, 115910), (7772, 105530), (8174, 100340), (8845, 92728), (9715, 84424), (10034, 81740), (10553, 77720), (11591, 70760), (14152, 57955), (15544, 52765), (16348, 50170), (17690, 46364), (19430, 42212), (20068, 40870), (20435, 40136), (21106, 38860), (23182, 35380), (25085, 32696)]