261279408

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1039}}^1$

素因数の和:1107

約数の個数: 120

約数和(自身を含む): 755189760

約数和(自身を除く): 493910352

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 31, 39, 48, 52, 62, 78, 93, 104, 124, 156, 169, 186, 208, 248, 312, 338, 372, 403, 496, 507, 624, 676, 744, 806, 1014, 1039, 1209, 1352, 1488, 1612, 2028, 2078, 2418, 2704, 3117, 3224, 4056, 4156, 4836, 5239, 6234, 6448, 8112, 8312, 9672, 10478, 12468, 13507, 15717, 16624, 19344, 20956, 24936, 27014, 31434, 32209, 40521, 41912, 49872, 54028, 62868, 64418, 81042, 83824, 96627, 108056, 125736, 128836, 162084, 175591, 193254, 216112, 251472, 257672, 324168, 351182, 386508, 418717, 515344, 526773, 648336, 702364, 773016, 837434, 1053546, 1256151, 1404728, 1546032, 1674868, 2107092, 2512302, 2809456, 3349736, 4214184, 5024604, 5443321, 6699472, 8428368, 10049208, 10886642, 16329963, 20098416, 21773284, 32659926, 43546568, 65319852, 87093136, 130639704, 261279408]

約数ペア:

[(1, 261279408), (2, 130639704), (3, 87093136), (4, 65319852), (6, 43546568), (8, 32659926), (12, 21773284), (13, 20098416), (16, 16329963), (24, 10886642), (26, 10049208), (31, 8428368), (39, 6699472), (48, 5443321), (52, 5024604), (62, 4214184), (78, 3349736), (93, 2809456), (104, 2512302), (124, 2107092), (156, 1674868), (169, 1546032), (186, 1404728), (208, 1256151), (248, 1053546), (312, 837434), (338, 773016), (372, 702364), (403, 648336), (496, 526773), (507, 515344), (624, 418717), (676, 386508), (744, 351182), (806, 324168), (1014, 257672), (1039, 251472), (1209, 216112), (1352, 193254), (1488, 175591), (1612, 162084), (2028, 128836), (2078, 125736), (2418, 108056), (2704, 96627), (3117, 83824), (3224, 81042), (4056, 64418), (4156, 62868), (4836, 54028), (5239, 49872), (6234, 41912), (6448, 40521), (8112, 32209), (8312, 31434), (9672, 27014), (10478, 24936), (12468, 20956), (13507, 19344), (15717, 16624)]