20212647

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{1511}}^1$

素因数の和:1548

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 13656153

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 343, 637, 1029, 1511, 1911, 4459, 4533, 10577, 13377, 19643, 31731, 58929, 74039, 137501, 222117, 412503, 518273, 962507, 1554819, 2887521, 6737549, 20212647]

約数ペア:

[(1, 20212647), (3, 6737549), (7, 2887521), (13, 1554819), (21, 962507), (39, 518273), (49, 412503), (91, 222117), (147, 137501), (273, 74039), (343, 58929), (637, 31731), (1029, 19643), (1511, 13377), (1911, 10577), (4459, 4533)]