21044445

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 34774272

約数和(自身を除く): 13729827

約数列:

[1, 3, 5, 15, 53, 103, 159, 257, 265, 309, 515, 771, 795, 1285, 1545, 3855, 5459, 13621, 16377, 26471, 27295, 40863, 68105, 79413, 81885, 132355, 204315, 397065, 1402963, 4208889, 7014815, 21044445]

約数ペア:

[(1, 21044445), (3, 7014815), (5, 4208889), (15, 1402963), (53, 397065), (103, 204315), (159, 132355), (257, 81885), (265, 79413), (309, 68105), (515, 40863), (771, 27295), (795, 26471), (1285, 16377), (1545, 13621), (3855, 5459)]