280726576

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:279

約数の個数: 120

約数和(自身を含む): 646994304

約数和(自身を除く): 366267728

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 31, 34, 52, 62, 68, 104, 124, 136, 169, 197, 208, 221, 248, 272, 338, 394, 403, 442, 496, 527, 676, 788, 806, 884, 1054, 1352, 1576, 1612, 1768, 2108, 2561, 2704, 2873, 3152, 3224, 3349, 3536, 4216, 5122, 5239, 5746, 6107, 6448, 6698, 6851, 8432, 10244, 10478, 11492, 12214, 13396, 13702, 20488, 20956, 22984, 24428, 26792, 27404, 33293, 40976, 41912, 43537, 45968, 48856, 53584, 54808, 66586, 79391, 83824, 87074, 89063, 97712, 103819, 109616, 133172, 158782, 174148, 178126, 207638, 266344, 317564, 348296, 356252, 415276, 532688, 565981, 635128, 696592, 712504, 830552, 1032083, 1131962, 1270256, 1349647, 1425008, 1661104, 2064166, 2263924, 2699294, 4128332, 4527848, 5398588, 8256664, 9055696, 10797176, 16513328, 17545411, 21594352, 35090822, 70181644, 140363288, 280726576]

約数ペア:

[(1, 280726576), (2, 140363288), (4, 70181644), (8, 35090822), (13, 21594352), (16, 17545411), (17, 16513328), (26, 10797176), (31, 9055696), (34, 8256664), (52, 5398588), (62, 4527848), (68, 4128332), (104, 2699294), (124, 2263924), (136, 2064166), (169, 1661104), (197, 1425008), (208, 1349647), (221, 1270256), (248, 1131962), (272, 1032083), (338, 830552), (394, 712504), (403, 696592), (442, 635128), (496, 565981), (527, 532688), (676, 415276), (788, 356252), (806, 348296), (884, 317564), (1054, 266344), (1352, 207638), (1576, 178126), (1612, 174148), (1768, 158782), (2108, 133172), (2561, 109616), (2704, 103819), (2873, 97712), (3152, 89063), (3224, 87074), (3349, 83824), (3536, 79391), (4216, 66586), (5122, 54808), (5239, 53584), (5746, 48856), (6107, 45968), (6448, 43537), (6698, 41912), (6851, 40976), (8432, 33293), (10244, 27404), (10478, 26792), (11492, 24428), (12214, 22984), (13396, 20956), (13702, 20488)]