81254140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{1373}}^1$

素因数の和:1662

約数の個数: 48

約数和(自身を含む): 186973920

約数和(自身を除く): 105719780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 269, 538, 1076, 1345, 1373, 2690, 2746, 2959, 5380, 5492, 5918, 6865, 11836, 13730, 14795, 15103, 27460, 29590, 30206, 59180, 60412, 75515, 151030, 302060, 369337, 738674, 1477348, 1846685, 3693370, 4062707, 7386740, 8125414, 16250828, 20313535, 40627070, 81254140]

約数ペア:

[(1, 81254140), (2, 40627070), (4, 20313535), (5, 16250828), (10, 8125414), (11, 7386740), (20, 4062707), (22, 3693370), (44, 1846685), (55, 1477348), (110, 738674), (220, 369337), (269, 302060), (538, 151030), (1076, 75515), (1345, 60412), (1373, 59180), (2690, 30206), (2746, 29590), (2959, 27460), (5380, 15103), (5492, 14795), (5918, 13730), (6865, 11836)]