20640466

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{467}}^1$

素因数の和:535

約数の個数: 48

約数和(自身を含む): 40334112

約数和(自身を除く): 19693646

約数列:

[1, 2, 7, 11, 14, 22, 41, 49, 77, 82, 98, 154, 287, 451, 467, 539, 574, 902, 934, 1078, 2009, 3157, 3269, 4018, 5137, 6314, 6538, 10274, 19147, 22099, 22883, 35959, 38294, 44198, 45766, 71918, 134029, 210617, 251713, 268058, 421234, 503426, 938203, 1474319, 1876406, 2948638, 10320233, 20640466]

約数ペア:

[(1, 20640466), (2, 10320233), (7, 2948638), (11, 1876406), (14, 1474319), (22, 938203), (41, 503426), (49, 421234), (77, 268058), (82, 251713), (98, 210617), (154, 134029), (287, 71918), (451, 45766), (467, 44198), (539, 38294), (574, 35959), (902, 22883), (934, 22099), (1078, 19147), (2009, 10274), (3157, 6538), (3269, 6314), (4018, 5137)]