20665320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1019}}^1$

素因数の和:1059

約数の個数: 96

約数和(自身を含む): 67197600

約数和(自身を除く): 46532280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 169, 195, 260, 312, 338, 390, 507, 520, 676, 780, 845, 1014, 1019, 1352, 1560, 1690, 2028, 2038, 2535, 3057, 3380, 4056, 4076, 5070, 5095, 6114, 6760, 8152, 10140, 10190, 12228, 13247, 15285, 20280, 20380, 24456, 26494, 30570, 39741, 40760, 52988, 61140, 66235, 79482, 105976, 122280, 132470, 158964, 172211, 198705, 264940, 317928, 344422, 397410, 516633, 529880, 688844, 794820, 861055, 1033266, 1377688, 1589640, 1722110, 2066532, 2583165, 3444220, 4133064, 5166330, 6888440, 10332660, 20665320]

約数ペア:

[(1, 20665320), (2, 10332660), (3, 6888440), (4, 5166330), (5, 4133064), (6, 3444220), (8, 2583165), (10, 2066532), (12, 1722110), (13, 1589640), (15, 1377688), (20, 1033266), (24, 861055), (26, 794820), (30, 688844), (39, 529880), (40, 516633), (52, 397410), (60, 344422), (65, 317928), (78, 264940), (104, 198705), (120, 172211), (130, 158964), (156, 132470), (169, 122280), (195, 105976), (260, 79482), (312, 66235), (338, 61140), (390, 52988), (507, 40760), (520, 39741), (676, 30570), (780, 26494), (845, 24456), (1014, 20380), (1019, 20280), (1352, 15285), (1560, 13247), (1690, 12228), (2028, 10190), (2038, 10140), (2535, 8152), (3057, 6760), (3380, 6114), (4056, 5095), (4076, 5070)]