131279984

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 308350800

約数和(自身を除く): 177070816

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 29, 34, 44, 58, 68, 88, 89, 116, 136, 176, 178, 187, 232, 272, 289, 319, 356, 374, 464, 493, 578, 638, 712, 748, 979, 986, 1156, 1276, 1424, 1496, 1513, 1958, 1972, 2312, 2552, 2581, 2992, 3026, 3179, 3916, 3944, 4624, 5104, 5162, 5423, 6052, 6358, 7832, 7888, 8381, 10324, 10846, 12104, 12716, 15664, 16643, 16762, 20648, 21692, 24208, 25432, 25721, 28391, 33286, 33524, 41296, 43384, 43877, 50864, 51442, 56782, 66572, 67048, 86768, 87754, 92191, 102884, 113564, 133144, 134096, 175508, 184382, 205768, 227128, 266288, 282931, 351016, 368764, 411536, 454256, 482647, 565862, 702032, 737528, 745909, 965294, 1131724, 1475056, 1491818, 1930588, 2263448, 2983636, 3861176, 4526896, 5967272, 7722352, 8204999, 11934544, 16409998, 32819996, 65639992, 131279984]

約数ペア:

[(1, 131279984), (2, 65639992), (4, 32819996), (8, 16409998), (11, 11934544), (16, 8204999), (17, 7722352), (22, 5967272), (29, 4526896), (34, 3861176), (44, 2983636), (58, 2263448), (68, 1930588), (88, 1491818), (89, 1475056), (116, 1131724), (136, 965294), (176, 745909), (178, 737528), (187, 702032), (232, 565862), (272, 482647), (289, 454256), (319, 411536), (356, 368764), (374, 351016), (464, 282931), (493, 266288), (578, 227128), (638, 205768), (712, 184382), (748, 175508), (979, 134096), (986, 133144), (1156, 113564), (1276, 102884), (1424, 92191), (1496, 87754), (1513, 86768), (1958, 67048), (1972, 66572), (2312, 56782), (2552, 51442), (2581, 50864), (2992, 43877), (3026, 43384), (3179, 41296), (3916, 33524), (3944, 33286), (4624, 28391), (5104, 25721), (5162, 25432), (5423, 24208), (6052, 21692), (6358, 20648), (7832, 16762), (7888, 16643), (8381, 15664), (10324, 12716), (10846, 12104)]