15279920

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{491}}^1$

素因数の和:893

約数の個数: 40

約数和(自身を含む): 35689680

約数和(自身を除く): 20409760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 491, 778, 982, 1556, 1945, 1964, 2455, 3112, 3890, 3928, 4910, 6224, 7780, 7856, 9820, 15560, 19640, 31120, 39280, 190999, 381998, 763996, 954995, 1527992, 1909990, 3055984, 3819980, 7639960, 15279920]

約数ペア:

[(1, 15279920), (2, 7639960), (4, 3819980), (5, 3055984), (8, 1909990), (10, 1527992), (16, 954995), (20, 763996), (40, 381998), (80, 190999), (389, 39280), (491, 31120), (778, 19640), (982, 15560), (1556, 9820), (1945, 7856), (1964, 7780), (2455, 6224), (3112, 4910), (3890, 3928)]