20402998

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{367}}^1$

素因数の和:425

約数の個数: 48

約数和(自身を含む): 40379904

約数和(自身を除く): 19976906

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 77, 133, 154, 209, 266, 361, 367, 418, 722, 734, 1463, 2527, 2569, 2926, 3971, 4037, 5054, 5138, 6973, 7942, 8074, 13946, 27797, 28259, 48811, 55594, 56518, 76703, 97622, 132487, 153406, 264974, 536921, 927409, 1073842, 1457357, 1854818, 2914714, 10201499, 20402998]

約数ペア:

[(1, 20402998), (2, 10201499), (7, 2914714), (11, 1854818), (14, 1457357), (19, 1073842), (22, 927409), (38, 536921), (77, 264974), (133, 153406), (154, 132487), (209, 97622), (266, 76703), (361, 56518), (367, 55594), (418, 48811), (722, 28259), (734, 27797), (1463, 13946), (2527, 8074), (2569, 7942), (2926, 6973), (3971, 5138), (4037, 5054)]