20665148

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{383}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 43352064

約数和(自身を除く): 22686916

約数列:

[1, 2, 4, 7, 14, 28, 41, 47, 82, 94, 164, 188, 287, 329, 383, 574, 658, 766, 1148, 1316, 1532, 1927, 2681, 3854, 5362, 7708, 10724, 13489, 15703, 18001, 26978, 31406, 36002, 53956, 62812, 72004, 109921, 126007, 219842, 252014, 439684, 504028, 738041, 1476082, 2952164, 5166287, 10332574, 20665148]

約数ペア:

[(1, 20665148), (2, 10332574), (4, 5166287), (7, 2952164), (14, 1476082), (28, 738041), (41, 504028), (47, 439684), (82, 252014), (94, 219842), (164, 126007), (188, 109921), (287, 72004), (329, 62812), (383, 53956), (574, 36002), (658, 31406), (766, 26978), (1148, 18001), (1316, 15703), (1532, 13489), (1927, 10724), (2681, 7708), (3854, 5362)]