20539376

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:270

約数の個数: 80

約数和(自身を含む): 47996928

約数和(自身を除く): 27457552

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 47, 52, 88, 94, 104, 143, 176, 188, 191, 208, 286, 376, 382, 517, 572, 611, 752, 764, 1034, 1144, 1222, 1528, 2068, 2101, 2288, 2444, 2483, 3056, 4136, 4202, 4888, 4966, 6721, 8272, 8404, 8977, 9776, 9932, 13442, 16808, 17954, 19864, 26884, 27313, 33616, 35908, 39728, 53768, 54626, 71816, 98747, 107536, 109252, 116701, 143632, 197494, 218504, 233402, 394988, 437008, 466804, 789976, 933608, 1283711, 1579952, 1867216, 2567422, 5134844, 10269688, 20539376]

約数ペア:

[(1, 20539376), (2, 10269688), (4, 5134844), (8, 2567422), (11, 1867216), (13, 1579952), (16, 1283711), (22, 933608), (26, 789976), (44, 466804), (47, 437008), (52, 394988), (88, 233402), (94, 218504), (104, 197494), (143, 143632), (176, 116701), (188, 109252), (191, 107536), (208, 98747), (286, 71816), (376, 54626), (382, 53768), (517, 39728), (572, 35908), (611, 33616), (752, 27313), (764, 26884), (1034, 19864), (1144, 17954), (1222, 16808), (1528, 13442), (2068, 9932), (2101, 9776), (2288, 8977), (2444, 8404), (2483, 8272), (3056, 6721), (4136, 4966), (4202, 4888)]