20402426

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:758

約数の個数: 32

約数和(自身を含む): 35462016

約数和(自身を除く): 15059590

約数列:

[1, 2, 11, 22, 23, 46, 61, 122, 253, 506, 661, 671, 1322, 1342, 1403, 2806, 7271, 14542, 15203, 15433, 30406, 30866, 40321, 80642, 167233, 334466, 443531, 887062, 927383, 1854766, 10201213, 20402426]

約数ペア:

[(1, 20402426), (2, 10201213), (11, 1854766), (22, 927383), (23, 887062), (46, 443531), (61, 334466), (122, 167233), (253, 80642), (506, 40321), (661, 30866), (671, 30406), (1322, 15433), (1342, 15203), (1403, 14542), (2806, 7271)]