20640158

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1327}}^1$

素因数の和:1448

約数の個数: 32

約数和(自身を含む): 39011328

約数和(自身を除く): 18371170

約数列:

[1, 2, 7, 11, 14, 22, 77, 101, 154, 202, 707, 1111, 1327, 1414, 2222, 2654, 7777, 9289, 14597, 15554, 18578, 29194, 102179, 134027, 204358, 268054, 938189, 1474297, 1876378, 2948594, 10320079, 20640158]

約数ペア:

[(1, 20640158), (2, 10320079), (7, 2948594), (11, 1876378), (14, 1474297), (22, 938189), (77, 268054), (101, 204358), (154, 134027), (202, 102179), (707, 29194), (1111, 18578), (1327, 15554), (1414, 14597), (2222, 9289), (2654, 7777)]