389627889

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{42457}}^1$

素因数の和:42509

約数の個数: 32

約数和(自身を含む): 652154880

約数和(自身を除く): 262526991

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 3059, 9177, 42457, 127371, 297199, 806683, 891597, 976511, 2420049, 2929533, 5646781, 6835577, 16940343, 18553709, 20506731, 55661127, 129875963, 389627889]

約数ペア:

[(1, 389627889), (3, 129875963), (7, 55661127), (19, 20506731), (21, 18553709), (23, 16940343), (57, 6835577), (69, 5646781), (133, 2929533), (161, 2420049), (399, 976511), (437, 891597), (483, 806683), (1311, 297199), (3059, 127371), (9177, 42457)]