21402256

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{10211}}^1$

素因数の和:10350

約数の個数: 20

約数和(自身を含む): 41787504

約数和(自身を除く): 20385248

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10211, 20422, 40844, 81688, 163376, 1337641, 2675282, 5350564, 10701128, 21402256]

約数ペア:

[(1, 21402256), (2, 10701128), (4, 5350564), (8, 2675282), (16, 1337641), (131, 163376), (262, 81688), (524, 40844), (1048, 20422), (2096, 10211)]