21624820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1861}}^1$

素因数の和:1960

約数の個数: 48

約数和(自身を含む): 52553088

約数和(自身を除く): 30928268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 83, 140, 166, 332, 415, 581, 830, 1162, 1660, 1861, 2324, 2905, 3722, 5810, 7444, 9305, 11620, 13027, 18610, 26054, 37220, 52108, 65135, 130270, 154463, 260540, 308926, 617852, 772315, 1081241, 1544630, 2162482, 3089260, 4324964, 5406205, 10812410, 21624820]

約数ペア:

[(1, 21624820), (2, 10812410), (4, 5406205), (5, 4324964), (7, 3089260), (10, 2162482), (14, 1544630), (20, 1081241), (28, 772315), (35, 617852), (70, 308926), (83, 260540), (140, 154463), (166, 130270), (332, 65135), (415, 52108), (581, 37220), (830, 26054), (1162, 18610), (1660, 13027), (1861, 11620), (2324, 9305), (2905, 7444), (3722, 5810)]