21581595

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{523}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 43160832

約数和(自身を除く): 21579237

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 131, 315, 393, 523, 655, 917, 1179, 1569, 1965, 2615, 2751, 3661, 4585, 4707, 5895, 7845, 8253, 10983, 13755, 18305, 23535, 32949, 41265, 54915, 68513, 164745, 205539, 342565, 479591, 616617, 1027695, 1438773, 2397955, 3083085, 4316319, 7193865, 21581595]

約数ペア:

[(1, 21581595), (3, 7193865), (5, 4316319), (7, 3083085), (9, 2397955), (15, 1438773), (21, 1027695), (35, 616617), (45, 479591), (63, 342565), (105, 205539), (131, 164745), (315, 68513), (393, 54915), (523, 41265), (655, 32949), (917, 23535), (1179, 18305), (1569, 13755), (1965, 10983), (2615, 8253), (2751, 7845), (3661, 5895), (4585, 4707)]