20871136

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4561}}^1$

素因数の和:4595

約数の個数: 48

約数和(自身を含む): 48284208

約数和(自身を除く): 27413072

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 88, 104, 143, 176, 208, 286, 352, 416, 572, 1144, 2288, 4561, 4576, 9122, 18244, 36488, 50171, 59293, 72976, 100342, 118586, 145952, 200684, 237172, 401368, 474344, 652223, 802736, 948688, 1304446, 1605472, 1897376, 2608892, 5217784, 10435568, 20871136]

約数ペア:

[(1, 20871136), (2, 10435568), (4, 5217784), (8, 2608892), (11, 1897376), (13, 1605472), (16, 1304446), (22, 948688), (26, 802736), (32, 652223), (44, 474344), (52, 401368), (88, 237172), (104, 200684), (143, 145952), (176, 118586), (208, 100342), (286, 72976), (352, 59293), (416, 50171), (572, 36488), (1144, 18244), (2288, 9122), (4561, 4576)]