20553208

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{863}}^1$

素因数の和:1111

約数の個数: 32

約数和(自身を含む): 41731200

約数和(自身を除く): 21177992

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 229, 458, 863, 916, 1726, 1832, 2977, 3452, 5954, 6904, 11219, 11908, 22438, 23816, 44876, 89752, 197627, 395254, 790508, 1581016, 2569151, 5138302, 10276604, 20553208]

約数ペア:

[(1, 20553208), (2, 10276604), (4, 5138302), (8, 2569151), (13, 1581016), (26, 790508), (52, 395254), (104, 197627), (229, 89752), (458, 44876), (863, 23816), (916, 22438), (1726, 11908), (1832, 11219), (2977, 6904), (3452, 5954)]