21302565

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{293}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 35392896

約数和(自身を除く): 14090331

約数列:

[1, 3, 5, 15, 37, 111, 131, 185, 293, 393, 555, 655, 879, 1465, 1965, 4395, 4847, 10841, 14541, 24235, 32523, 38383, 54205, 72705, 115149, 162615, 191915, 575745, 1420171, 4260513, 7100855, 21302565]

約数ペア:

[(1, 21302565), (3, 7100855), (5, 4260513), (15, 1420171), (37, 575745), (111, 191915), (131, 162615), (185, 115149), (293, 72705), (393, 54205), (555, 38383), (655, 32523), (879, 24235), (1465, 14541), (1965, 10841), (4395, 4847)]