81573128

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1259}}^1$

素因数の和:1374

約数の個数: 64

約数和(自身を含む): 190512000

約数和(自身を除く): 108938872

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 89, 91, 104, 178, 182, 356, 364, 623, 712, 728, 1157, 1246, 1259, 2314, 2492, 2518, 4628, 4984, 5036, 8099, 8813, 9256, 10072, 16198, 16367, 17626, 32396, 32734, 35252, 64792, 65468, 70504, 112051, 114569, 130936, 224102, 229138, 448204, 458276, 784357, 896408, 916552, 1456663, 1568714, 2913326, 3137428, 5826652, 6274856, 10196641, 11653304, 20393282, 40786564, 81573128]

約数ペア:

[(1, 81573128), (2, 40786564), (4, 20393282), (7, 11653304), (8, 10196641), (13, 6274856), (14, 5826652), (26, 3137428), (28, 2913326), (52, 1568714), (56, 1456663), (89, 916552), (91, 896408), (104, 784357), (178, 458276), (182, 448204), (356, 229138), (364, 224102), (623, 130936), (712, 114569), (728, 112051), (1157, 70504), (1246, 65468), (1259, 64792), (2314, 35252), (2492, 32734), (2518, 32396), (4628, 17626), (4984, 16367), (5036, 16198), (8099, 10072), (8813, 9256)]