721642893

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1\times {\mathrm{277}}^1$

素因数の和:677

約数の個数: 32

約数和(自身を含む): 1009873920

約数和(自身を除く): 288231027

約数列:

[1, 3, 31, 93, 109, 257, 277, 327, 771, 831, 3379, 7967, 8587, 10137, 23901, 25761, 28013, 30193, 71189, 84039, 90579, 213567, 868403, 935983, 2206859, 2605209, 2807949, 6620577, 7759601, 23278803, 240547631, 721642893]

約数ペア:

[(1, 721642893), (3, 240547631), (31, 23278803), (93, 7759601), (109, 6620577), (257, 2807949), (277, 2605209), (327, 2206859), (771, 935983), (831, 868403), (3379, 213567), (7967, 90579), (8587, 84039), (10137, 71189), (23901, 30193), (25761, 28013)]