18325840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{263}}^1$

素因数の和:356

約数の個数: 80

約数和(自身を含む): 46747008

約数和(自身を除く): 28421168

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 67, 80, 104, 130, 134, 208, 260, 263, 268, 335, 520, 526, 536, 670, 871, 1040, 1052, 1072, 1315, 1340, 1742, 2104, 2630, 2680, 3419, 3484, 4208, 4355, 5260, 5360, 6838, 6968, 8710, 10520, 13676, 13936, 17095, 17420, 17621, 21040, 27352, 34190, 34840, 35242, 54704, 68380, 69680, 70484, 88105, 136760, 140968, 176210, 229073, 273520, 281936, 352420, 458146, 704840, 916292, 1145365, 1409680, 1832584, 2290730, 3665168, 4581460, 9162920, 18325840]

約数ペア:

[(1, 18325840), (2, 9162920), (4, 4581460), (5, 3665168), (8, 2290730), (10, 1832584), (13, 1409680), (16, 1145365), (20, 916292), (26, 704840), (40, 458146), (52, 352420), (65, 281936), (67, 273520), (80, 229073), (104, 176210), (130, 140968), (134, 136760), (208, 88105), (260, 70484), (263, 69680), (268, 68380), (335, 54704), (520, 35242), (526, 34840), (536, 34190), (670, 27352), (871, 21040), (1040, 17621), (1052, 17420), (1072, 17095), (1315, 13936), (1340, 13676), (1742, 10520), (2104, 8710), (2630, 6968), (2680, 6838), (3419, 5360), (3484, 5260), (4208, 4355)]