20913888

素因数分解:

$2^5\times 3^1\times {\mathrm{131}}^1\times {\mathrm{1663}}^1$

素因数の和:1807

約数の個数: 48

約数和(自身を含む): 55351296

約数和(自身を除く): 34437408

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 131, 262, 393, 524, 786, 1048, 1572, 1663, 2096, 3144, 3326, 4192, 4989, 6288, 6652, 9978, 12576, 13304, 19956, 26608, 39912, 53216, 79824, 159648, 217853, 435706, 653559, 871412, 1307118, 1742824, 2614236, 3485648, 5228472, 6971296, 10456944, 20913888]

約数ペア:

[(1, 20913888), (2, 10456944), (3, 6971296), (4, 5228472), (6, 3485648), (8, 2614236), (12, 1742824), (16, 1307118), (24, 871412), (32, 653559), (48, 435706), (96, 217853), (131, 159648), (262, 79824), (393, 53216), (524, 39912), (786, 26608), (1048, 19956), (1572, 13304), (1663, 12576), (2096, 9978), (3144, 6652), (3326, 6288), (4192, 4989)]