15721494820

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1061}}^1\times {\mathrm{4139}}^1$

素因数の和:5388

約数の個数: 48

約数和(自身を含む): 33238900800

約数和(自身を除く): 17517405980

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1061, 1790, 2122, 3580, 4139, 4244, 5305, 8278, 10610, 16556, 20695, 21220, 41390, 82780, 189919, 379838, 740881, 759676, 949595, 1481762, 1899190, 2963524, 3704405, 3798380, 4391479, 7408810, 8782958, 14817620, 17565916, 21957395, 43914790, 87829580, 786074741, 1572149482, 3144298964, 3930373705, 7860747410, 15721494820]

約数ペア:

[(1, 15721494820), (2, 7860747410), (4, 3930373705), (5, 3144298964), (10, 1572149482), (20, 786074741), (179, 87829580), (358, 43914790), (716, 21957395), (895, 17565916), (1061, 14817620), (1790, 8782958), (2122, 7408810), (3580, 4391479), (4139, 3798380), (4244, 3704405), (5305, 2963524), (8278, 1899190), (10610, 1481762), (16556, 949595), (20695, 759676), (21220, 740881), (41390, 379838), (82780, 189919)]