20493000000

素因数分解:

$2^6\times 3^4\times 5^6\times {\mathrm{11}}^1\times {\mathrm{23}}^1$

素因数の和:88

約数の個数: 980

約数和(自身を含む): 86438268576

約数和(自身を除く): 65945268576

約数列:

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648000, 655776, 660000, 675000, 683100, 687500, 690000, 712800, 718750, 728640, 742500, 745200, 750000, 759000, 776250, 790625, 792000, 810000, 819720, 825000, 828000, 843750, 853875, 862500, 891000, 900000, 910800, 920000, 928125, 931500, 948750, 990000, 993600, 1000000, 1012000, 1012500, 1024650, 1031250, 1035000, 1078125, 1080000, 1092960, 1100000, 1113750, 1125000, 1138500, 1150000, 1164375, 1188000, 1214400, 1237500, 1242000, 1265000, 1265625, 1293750, 1311552, 1320000, 1350000, 1366200, 1375000, 1380000, 1423125, 1425600, 1437500, 1485000, 1490400, 1500000, 1518000, 1546875, 1552500, 1581250, 1620000, 1639440, 1650000, 1656000, 1687500, 1707750, 1725000, 1782000, 1800000, 1821600, 1856250, 1863000, 1897500, 1940625, 1980000, 2024000, 2025000, 2049300, 2062500, 2070000, 2156250, 2185920, 2200000, 2227500, 2250000, 2277000, 2300000, 2328750, 2371875, 2376000, 2475000, 2484000, 2530000, 2531250, 2561625, 2587500, 2700000, 2732400, 2750000, 2760000, 2784375, 2846250, 2875000, 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約数ペア:

[(1, 20493000000), (2, 10246500000), (3, 6831000000), (4, 5123250000), (5, 4098600000), (6, 3415500000), (8, 2561625000), (9, 2277000000), (10, 2049300000), (11, 1863000000), (12, 1707750000), (15, 1366200000), (16, 1280812500), (18, 1138500000), (20, 1024650000), (22, 931500000), (23, 891000000), (24, 853875000), (25, 819720000), (27, 759000000), (30, 683100000), (32, 640406250), (33, 621000000), (36, 569250000), (40, 512325000), (44, 465750000), (45, 455400000), (46, 445500000), (48, 426937500), (50, 409860000), (54, 379500000), (55, 372600000), (60, 341550000), (64, 320203125), (66, 310500000), (69, 297000000), (72, 284625000), (75, 273240000), (80, 256162500), (81, 253000000), (88, 232875000), (90, 227700000), (92, 222750000), (96, 213468750), (99, 207000000), (100, 204930000), (108, 189750000), (110, 186300000), (115, 178200000), (120, 170775000), (125, 163944000), (132, 155250000), (135, 151800000), (138, 148500000), (144, 142312500), (150, 136620000), (160, 128081250), (162, 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