28443680

素因数分解:

$2^5\times 5^1\times {\mathrm{389}}^1\times {\mathrm{457}}^1$

素因数の和:861

約数の個数: 48

約数和(自身を含む): 67518360

約数和(自身を除く): 39074680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 389, 457, 778, 914, 1556, 1828, 1945, 2285, 3112, 3656, 3890, 4570, 6224, 7312, 7780, 9140, 12448, 14624, 15560, 18280, 31120, 36560, 62240, 73120, 177773, 355546, 711092, 888865, 1422184, 1777730, 2844368, 3555460, 5688736, 7110920, 14221840, 28443680]

約数ペア:

[(1, 28443680), (2, 14221840), (4, 7110920), (5, 5688736), (8, 3555460), (10, 2844368), (16, 1777730), (20, 1422184), (32, 888865), (40, 711092), (80, 355546), (160, 177773), (389, 73120), (457, 62240), (778, 36560), (914, 31120), (1556, 18280), (1828, 15560), (1945, 14624), (2285, 12448), (3112, 9140), (3656, 7780), (3890, 7312), (4570, 6224)]