31417880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1949}}^1$

素因数の和:2004

約数の個数: 64

約数和(自身を含む): 78624000

約数和(自身を除く): 47206120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 1949, 2015, 3224, 3898, 4030, 7796, 8060, 9745, 15592, 16120, 19490, 25337, 38980, 50674, 60419, 77960, 101348, 120838, 126685, 202696, 241676, 253370, 302095, 483352, 506740, 604190, 785447, 1013480, 1208380, 1570894, 2416760, 3141788, 3927235, 6283576, 7854470, 15708940, 31417880]

約数ペア:

[(1, 31417880), (2, 15708940), (4, 7854470), (5, 6283576), (8, 3927235), (10, 3141788), (13, 2416760), (20, 1570894), (26, 1208380), (31, 1013480), (40, 785447), (52, 604190), (62, 506740), (65, 483352), (104, 302095), (124, 253370), (130, 241676), (155, 202696), (248, 126685), (260, 120838), (310, 101348), (403, 77960), (520, 60419), (620, 50674), (806, 38980), (1240, 25337), (1612, 19490), (1949, 16120), (2015, 15592), (3224, 9745), (3898, 8060), (4030, 7796)]