393421

素因数分解:

$7^3\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:89

約数の個数: 16

約数和(自身を含む): 486400

約数和(自身を除く): 92979

約数列:

[1, 7, 31, 37, 49, 217, 259, 343, 1147, 1519, 1813, 8029, 10633, 12691, 56203, 393421]

約数ペア:

[(1, 393421), (7, 56203), (31, 12691), (37, 10633), (49, 8029), (217, 1813), (259, 1519), (343, 1147)]