51172720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:418

約数の個数: 80

約数和(自身を含む): 127277568

約数和(自身を除く): 76104848

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 191, 197, 272, 340, 382, 394, 680, 764, 788, 955, 985, 1360, 1528, 1576, 1910, 1970, 3056, 3152, 3247, 3349, 3820, 3940, 6494, 6698, 7640, 7880, 12988, 13396, 15280, 15760, 16235, 16745, 25976, 26792, 32470, 33490, 37627, 51952, 53584, 64940, 66980, 75254, 129880, 133960, 150508, 188135, 259760, 267920, 301016, 376270, 602032, 639659, 752540, 1279318, 1505080, 2558636, 3010160, 3198295, 5117272, 6396590, 10234544, 12793180, 25586360, 51172720]

約数ペア:

[(1, 51172720), (2, 25586360), (4, 12793180), (5, 10234544), (8, 6396590), (10, 5117272), (16, 3198295), (17, 3010160), (20, 2558636), (34, 1505080), (40, 1279318), (68, 752540), (80, 639659), (85, 602032), (136, 376270), (170, 301016), (191, 267920), (197, 259760), (272, 188135), (340, 150508), (382, 133960), (394, 129880), (680, 75254), (764, 66980), (788, 64940), (955, 53584), (985, 51952), (1360, 37627), (1528, 33490), (1576, 32470), (1910, 26792), (1970, 25976), (3056, 16745), (3152, 16235), (3247, 15760), (3349, 15280), (3820, 13396), (3940, 12988), (6494, 7880), (6698, 7640)]