689913

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:293

約数の個数: 24

約数和(自身を含む): 1168128

約数和(自身を除く): 478215

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 233, 329, 423, 699, 987, 1631, 2097, 2961, 4893, 10951, 14679, 32853, 76657, 98559, 229971, 689913]

約数ペア:

[(1, 689913), (3, 229971), (7, 98559), (9, 76657), (21, 32853), (47, 14679), (63, 10951), (141, 4893), (233, 2961), (329, 2097), (423, 1631), (699, 987)]