720329519

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{233}}^1\times {\mathrm{641}}^1$

素因数の和:947

約数の個数: 32

約数和(自身を含む): 908578944

約数和(自身を除く): 188249425

約数列:

[1, 7, 13, 53, 91, 233, 371, 641, 689, 1631, 3029, 4487, 4823, 8333, 12349, 21203, 33973, 58331, 86443, 149353, 160537, 237811, 441649, 1045471, 1123759, 1941589, 3091543, 7915709, 13591123, 55409963, 102904217, 720329519]

約数ペア:

[(1, 720329519), (7, 102904217), (13, 55409963), (53, 13591123), (91, 7915709), (233, 3091543), (371, 1941589), (641, 1123759), (689, 1045471), (1631, 441649), (3029, 237811), (4487, 160537), (4823, 149353), (8333, 86443), (12349, 58331), (21203, 33973)]