257499720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:404

約数の個数: 192

約数和(自身を含む): 883509120

約数和(自身を除く): 626009400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 40, 45, 46, 60, 69, 72, 90, 92, 115, 120, 137, 138, 180, 184, 207, 227, 230, 274, 276, 345, 360, 411, 414, 454, 460, 548, 552, 681, 685, 690, 822, 828, 908, 920, 1035, 1096, 1135, 1233, 1362, 1370, 1380, 1644, 1656, 1816, 2043, 2055, 2070, 2270, 2466, 2724, 2740, 2760, 3151, 3288, 3405, 4086, 4110, 4140, 4540, 4932, 5221, 5448, 5480, 6165, 6302, 6810, 8172, 8220, 8280, 9080, 9453, 9864, 10215, 10442, 12330, 12604, 13620, 15663, 15755, 16344, 16440, 18906, 20430, 20884, 24660, 25208, 26105, 27240, 28359, 31099, 31326, 31510, 37812, 40860, 41768, 46989, 47265, 49320, 52210, 56718, 62198, 62652, 63020, 75624, 78315, 81720, 93297, 93978, 94530, 104420, 113436, 124396, 125304, 126040, 141795, 155495, 156630, 186594, 187956, 189060, 208840, 226872, 234945, 248792, 279891, 283590, 310990, 313260, 373188, 375912, 378120, 466485, 469890, 559782, 567180, 621980, 626520, 715277, 746376, 932970, 939780, 1119564, 1134360, 1243960, 1399455, 1430554, 1865940, 1879560, 2145831, 2239128, 2798910, 2861108, 3576385, 3731880, 4291662, 5597820, 5722216, 6437493, 7152770, 8583324, 10729155, 11195640, 12874986, 14305540, 17166648, 21458310, 25749972, 28611080, 32187465, 42916620, 51499944, 64374930, 85833240, 128749860, 257499720]

約数ペア:

[(1, 257499720), (2, 128749860), (3, 85833240), (4, 64374930), (5, 51499944), (6, 42916620), (8, 32187465), (9, 28611080), (10, 25749972), (12, 21458310), (15, 17166648), (18, 14305540), (20, 12874986), (23, 11195640), (24, 10729155), (30, 8583324), (36, 7152770), (40, 6437493), (45, 5722216), (46, 5597820), (60, 4291662), (69, 3731880), (72, 3576385), (90, 2861108), (92, 2798910), (115, 2239128), (120, 2145831), (137, 1879560), (138, 1865940), (180, 1430554), (184, 1399455), (207, 1243960), (227, 1134360), (230, 1119564), (274, 939780), (276, 932970), (345, 746376), (360, 715277), (411, 626520), (414, 621980), (454, 567180), (460, 559782), (548, 469890), (552, 466485), (681, 378120), (685, 375912), (690, 373188), (822, 313260), (828, 310990), (908, 283590), (920, 279891), (1035, 248792), (1096, 234945), (1135, 226872), (1233, 208840), (1362, 189060), (1370, 187956), (1380, 186594), (1644, 156630), (1656, 155495), (1816, 141795), (2043, 126040), (2055, 125304), (2070, 124396), (2270, 113436), (2466, 104420), (2724, 94530), (2740, 93978), (2760, 93297), (3151, 81720), (3288, 78315), (3405, 75624), (4086, 63020), (4110, 62652), (4140, 62198), (4540, 56718), (4932, 52210), (5221, 49320), (5448, 47265), (5480, 46989), (6165, 41768), (6302, 40860), (6810, 37812), (8172, 31510), (8220, 31326), (8280, 31099), (9080, 28359), (9453, 27240), (9864, 26105), (10215, 25208), (10442, 24660), (12330, 20884), (12604, 20430), (13620, 18906), (15663, 16440), (15755, 16344)]