15708940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1949}}^1$

素因数の和:2002

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 20982260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 1949, 2015, 3898, 4030, 7796, 8060, 9745, 19490, 25337, 38980, 50674, 60419, 101348, 120838, 126685, 241676, 253370, 302095, 506740, 604190, 785447, 1208380, 1570894, 3141788, 3927235, 7854470, 15708940]

約数ペア:

[(1, 15708940), (2, 7854470), (4, 3927235), (5, 3141788), (10, 1570894), (13, 1208380), (20, 785447), (26, 604190), (31, 506740), (52, 302095), (62, 253370), (65, 241676), (124, 126685), (130, 120838), (155, 101348), (260, 60419), (310, 50674), (403, 38980), (620, 25337), (806, 19490), (1612, 9745), (1949, 8060), (2015, 7796), (3898, 4030)]