1991728240

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{6257}}^1$

素因数の和:6466

約数の個数: 80

約数和(自身を含む): 4860813888

約数和(自身を除く): 2869085648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 173, 184, 230, 346, 368, 460, 692, 865, 920, 1384, 1730, 1840, 2768, 3460, 3979, 6257, 6920, 7958, 12514, 13840, 15916, 19895, 25028, 31285, 31832, 39790, 50056, 62570, 63664, 79580, 100112, 125140, 143911, 159160, 250280, 287822, 318320, 500560, 575644, 719555, 1082461, 1151288, 1439110, 2164922, 2302576, 2878220, 4329844, 5412305, 5756440, 8659688, 10824610, 11512880, 17319376, 21649220, 24896603, 43298440, 49793206, 86596880, 99586412, 124483015, 199172824, 248966030, 398345648, 497932060, 995864120, 1991728240]

約数ペア:

[(1, 1991728240), (2, 995864120), (4, 497932060), (5, 398345648), (8, 248966030), (10, 199172824), (16, 124483015), (20, 99586412), (23, 86596880), (40, 49793206), (46, 43298440), (80, 24896603), (92, 21649220), (115, 17319376), (173, 11512880), (184, 10824610), (230, 8659688), (346, 5756440), (368, 5412305), (460, 4329844), (692, 2878220), (865, 2302576), (920, 2164922), (1384, 1439110), (1730, 1151288), (1840, 1082461), (2768, 719555), (3460, 575644), (3979, 500560), (6257, 318320), (6920, 287822), (7958, 250280), (12514, 159160), (13840, 143911), (15916, 125140), (19895, 100112), (25028, 79580), (31285, 63664), (31832, 62570), (39790, 50056)]