20081776

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:230

約数の個数: 80

約数和(自身を含む): 46747008

約数和(自身を除く): 26665232

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 67, 88, 104, 131, 134, 143, 176, 208, 262, 268, 286, 524, 536, 572, 737, 871, 1048, 1072, 1144, 1441, 1474, 1703, 1742, 2096, 2288, 2882, 2948, 3406, 3484, 5764, 5896, 6812, 6968, 8777, 9581, 11528, 11792, 13624, 13936, 17554, 18733, 19162, 23056, 27248, 35108, 37466, 38324, 70216, 74932, 76648, 96547, 114101, 140432, 149864, 153296, 193094, 228202, 299728, 386188, 456404, 772376, 912808, 1255111, 1544752, 1825616, 2510222, 5020444, 10040888, 20081776]

約数ペア:

[(1, 20081776), (2, 10040888), (4, 5020444), (8, 2510222), (11, 1825616), (13, 1544752), (16, 1255111), (22, 912808), (26, 772376), (44, 456404), (52, 386188), (67, 299728), (88, 228202), (104, 193094), (131, 153296), (134, 149864), (143, 140432), (176, 114101), (208, 96547), (262, 76648), (268, 74932), (286, 70216), (524, 38324), (536, 37466), (572, 35108), (737, 27248), (871, 23056), (1048, 19162), (1072, 18733), (1144, 17554), (1441, 13936), (1474, 13624), (1703, 11792), (1742, 11528), (2096, 9581), (2288, 8777), (2882, 6968), (2948, 6812), (3406, 5896), (3484, 5764)]