81378492

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{521657}}^1$

素因数の和:521677

約数の個数: 24

約数和(自身を含む): 204489936

約数和(自身を除く): 123111444

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 521657, 1043314, 1564971, 2086628, 3129942, 6259884, 6781541, 13563082, 20344623, 27126164, 40689246, 81378492]

約数ペア:

[(1, 81378492), (2, 40689246), (3, 27126164), (4, 20344623), (6, 13563082), (12, 6781541), (13, 6259884), (26, 3129942), (39, 2086628), (52, 1564971), (78, 1043314), (156, 521657)]