2000807720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{27529}}^1$

素因数の和:27642

約数の個数: 64

約数和(自身を含む): 4757184000

約数和(自身を除く): 2756376280

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 79, 92, 115, 158, 184, 230, 316, 395, 460, 632, 790, 920, 1580, 1817, 3160, 3634, 7268, 9085, 14536, 18170, 27529, 36340, 55058, 72680, 110116, 137645, 220232, 275290, 550580, 633167, 1101160, 1266334, 2174791, 2532668, 3165835, 4349582, 5065336, 6331670, 8699164, 10873955, 12663340, 17398328, 21747910, 25326680, 43495820, 50020193, 86991640, 100040386, 200080772, 250100965, 400161544, 500201930, 1000403860, 2000807720]

約数ペア:

[(1, 2000807720), (2, 1000403860), (4, 500201930), (5, 400161544), (8, 250100965), (10, 200080772), (20, 100040386), (23, 86991640), (40, 50020193), (46, 43495820), (79, 25326680), (92, 21747910), (115, 17398328), (158, 12663340), (184, 10873955), (230, 8699164), (316, 6331670), (395, 5065336), (460, 4349582), (632, 3165835), (790, 2532668), (920, 2174791), (1580, 1266334), (1817, 1101160), (3160, 633167), (3634, 550580), (7268, 275290), (9085, 220232), (14536, 137645), (18170, 110116), (27529, 72680), (36340, 55058)]