213318215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{168631}}^1$

素因数の和:168670

約数の個数: 16

約数和(自身を含む): 291396096

約数和(自身を除く): 78077881

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 168631, 843155, 1854941, 3878513, 9274705, 19392565, 42663643, 213318215]

約数ペア:

[(1, 213318215), (5, 42663643), (11, 19392565), (23, 9274705), (55, 3878513), (115, 1854941), (253, 843155), (1265, 168631)]