20257942760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{7789}}^1$

素因数の和:8091

約数の個数: 128

約数和(自身を含む): 52094534400

約数和(自身を除く): 31836591640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 220, 230, 253, 257, 440, 460, 506, 514, 920, 1012, 1028, 1265, 1285, 2024, 2056, 2530, 2570, 2827, 5060, 5140, 5654, 5911, 7789, 10120, 10280, 11308, 11822, 14135, 15578, 22616, 23644, 28270, 29555, 31156, 38945, 47288, 56540, 59110, 62312, 65021, 77890, 85679, 113080, 118220, 130042, 155780, 171358, 179147, 236440, 260084, 311560, 325105, 342716, 358294, 428395, 520168, 650210, 685432, 716588, 856790, 895735, 1300420, 1433176, 1713580, 1791470, 1970617, 2001773, 2600840, 3427160, 3582940, 3941234, 4003546, 7165880, 7882468, 8007092, 9853085, 10008865, 15764936, 16014184, 19706170, 20017730, 22019503, 39412340, 40035460, 44039006, 46040779, 78824680, 80070920, 88078012, 92081558, 110097515, 176156024, 184163116, 220195030, 230203895, 368326232, 440390060, 460407790, 506448569, 880780120, 920815580, 1012897138, 1841631160, 2025794276, 2532242845, 4051588552, 5064485690, 10128971380, 20257942760]

約数ペア:

[(1, 20257942760), (2, 10128971380), (4, 5064485690), (5, 4051588552), (8, 2532242845), (10, 2025794276), (11, 1841631160), (20, 1012897138), (22, 920815580), (23, 880780120), (40, 506448569), (44, 460407790), (46, 440390060), (55, 368326232), (88, 230203895), (92, 220195030), (110, 184163116), (115, 176156024), (184, 110097515), (220, 92081558), (230, 88078012), (253, 80070920), (257, 78824680), (440, 46040779), (460, 44039006), (506, 40035460), (514, 39412340), (920, 22019503), (1012, 20017730), (1028, 19706170), (1265, 16014184), (1285, 15764936), (2024, 10008865), (2056, 9853085), (2530, 8007092), (2570, 7882468), (2827, 7165880), (5060, 4003546), (5140, 3941234), (5654, 3582940), (5911, 3427160), (7789, 2600840), (10120, 2001773), (10280, 1970617), (11308, 1791470), (11822, 1713580), (14135, 1433176), (15578, 1300420), (22616, 895735), (23644, 856790), (28270, 716588), (29555, 685432), (31156, 650210), (38945, 520168), (47288, 428395), (56540, 358294), (59110, 342716), (62312, 325105), (65021, 311560), (77890, 260084), (85679, 236440), (113080, 179147), (118220, 171358), (130042, 155780)]