820470800

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{521}}^1$

素因数の和:697

約数の個数: 120

約数和(自身を含む): 2054725632

約数和(自身を除く): 1234254832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 127, 155, 200, 248, 254, 310, 400, 496, 508, 521, 620, 635, 775, 1016, 1042, 1240, 1270, 1550, 2032, 2084, 2480, 2540, 2605, 3100, 3175, 3937, 4168, 5080, 5210, 6200, 6350, 7874, 8336, 10160, 10420, 12400, 12700, 13025, 15748, 16151, 19685, 20840, 25400, 26050, 31496, 32302, 39370, 41680, 50800, 52100, 62992, 64604, 66167, 78740, 80755, 98425, 104200, 129208, 132334, 157480, 161510, 196850, 208400, 258416, 264668, 314960, 323020, 330835, 393700, 403775, 529336, 646040, 661670, 787400, 807550, 1058672, 1292080, 1323340, 1574800, 1615100, 1654175, 2051177, 2646680, 3230200, 3308350, 4102354, 5293360, 6460400, 6616700, 8204708, 10255885, 13233400, 16409416, 20511770, 26466800, 32818832, 41023540, 51279425, 82047080, 102558850, 164094160, 205117700, 410235400, 820470800]

約数ペア:

[(1, 820470800), (2, 410235400), (4, 205117700), (5, 164094160), (8, 102558850), (10, 82047080), (16, 51279425), (20, 41023540), (25, 32818832), (31, 26466800), (40, 20511770), (50, 16409416), (62, 13233400), (80, 10255885), (100, 8204708), (124, 6616700), (127, 6460400), (155, 5293360), (200, 4102354), (248, 3308350), (254, 3230200), (310, 2646680), (400, 2051177), (496, 1654175), (508, 1615100), (521, 1574800), (620, 1323340), (635, 1292080), (775, 1058672), (1016, 807550), (1042, 787400), (1240, 661670), (1270, 646040), (1550, 529336), (2032, 403775), (2084, 393700), (2480, 330835), (2540, 323020), (2605, 314960), (3100, 264668), (3175, 258416), (3937, 208400), (4168, 196850), (5080, 161510), (5210, 157480), (6200, 132334), (6350, 129208), (7874, 104200), (8336, 98425), (10160, 80755), (10420, 78740), (12400, 66167), (12700, 64604), (13025, 62992), (15748, 52100), (16151, 50800), (19685, 41680), (20840, 39370), (25400, 32302), (26050, 31496)]