81841240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5077}}^1$

素因数の和:5132

約数の個数: 64

約数和(自身を含む): 204744960

約数和(自身を除く): 122903720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 2015, 3224, 4030, 5077, 8060, 10154, 16120, 20308, 25385, 40616, 50770, 66001, 101540, 132002, 157387, 203080, 264004, 314774, 330005, 528008, 629548, 660010, 786935, 1259096, 1320020, 1573870, 2046031, 2640040, 3147740, 4092062, 6295480, 8184124, 10230155, 16368248, 20460310, 40920620, 81841240]

約数ペア:

[(1, 81841240), (2, 40920620), (4, 20460310), (5, 16368248), (8, 10230155), (10, 8184124), (13, 6295480), (20, 4092062), (26, 3147740), (31, 2640040), (40, 2046031), (52, 1573870), (62, 1320020), (65, 1259096), (104, 786935), (124, 660010), (130, 629548), (155, 528008), (248, 330005), (260, 314774), (310, 264004), (403, 203080), (520, 157387), (620, 132002), (806, 101540), (1240, 66001), (1612, 50770), (2015, 40616), (3224, 25385), (4030, 20308), (5077, 16120), (8060, 10154)]