81455880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2683}}^1$

素因数の和:2731

約数の個数: 128

約数和(自身を含む): 278277120

約数和(自身を除く): 196821240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 23, 24, 30, 33, 40, 44, 46, 55, 60, 66, 69, 88, 92, 110, 115, 120, 132, 138, 165, 184, 220, 230, 253, 264, 276, 330, 345, 440, 460, 506, 552, 660, 690, 759, 920, 1012, 1265, 1320, 1380, 1518, 2024, 2530, 2683, 2760, 3036, 3795, 5060, 5366, 6072, 7590, 8049, 10120, 10732, 13415, 15180, 16098, 21464, 26830, 29513, 30360, 32196, 40245, 53660, 59026, 61709, 64392, 80490, 88539, 107320, 118052, 123418, 147565, 160980, 177078, 185127, 236104, 246836, 295130, 308545, 321960, 354156, 370254, 442695, 493672, 590260, 617090, 678799, 708312, 740508, 885390, 925635, 1180520, 1234180, 1357598, 1481016, 1770780, 1851270, 2036397, 2468360, 2715196, 3393995, 3541560, 3702540, 4072794, 5430392, 6787990, 7405080, 8145588, 10181985, 13575980, 16291176, 20363970, 27151960, 40727940, 81455880]

約数ペア:

[(1, 81455880), (2, 40727940), (3, 27151960), (4, 20363970), (5, 16291176), (6, 13575980), (8, 10181985), (10, 8145588), (11, 7405080), (12, 6787990), (15, 5430392), (20, 4072794), (22, 3702540), (23, 3541560), (24, 3393995), (30, 2715196), (33, 2468360), (40, 2036397), (44, 1851270), (46, 1770780), (55, 1481016), (60, 1357598), (66, 1234180), (69, 1180520), (88, 925635), (92, 885390), (110, 740508), (115, 708312), (120, 678799), (132, 617090), (138, 590260), (165, 493672), (184, 442695), (220, 370254), (230, 354156), (253, 321960), (264, 308545), (276, 295130), (330, 246836), (345, 236104), (440, 185127), (460, 177078), (506, 160980), (552, 147565), (660, 123418), (690, 118052), (759, 107320), (920, 88539), (1012, 80490), (1265, 64392), (1320, 61709), (1380, 59026), (1518, 53660), (2024, 40245), (2530, 32196), (2683, 30360), (2760, 29513), (3036, 26830), (3795, 21464), (5060, 16098), (5366, 15180), (6072, 13415), (7590, 10732), (8049, 10120)]