31057760

素因数分解:

$2^5\times 5^1\times {\mathrm{389}}^1\times {\mathrm{499}}^1$

素因数の和:903

約数の個数: 48

約数和(自身を含む): 73710000

約数和(自身を除く): 42652240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 389, 499, 778, 998, 1556, 1945, 1996, 2495, 3112, 3890, 3992, 4990, 6224, 7780, 7984, 9980, 12448, 15560, 15968, 19960, 31120, 39920, 62240, 79840, 194111, 388222, 776444, 970555, 1552888, 1941110, 3105776, 3882220, 6211552, 7764440, 15528880, 31057760]

約数ペア:

[(1, 31057760), (2, 15528880), (4, 7764440), (5, 6211552), (8, 3882220), (10, 3105776), (16, 1941110), (20, 1552888), (32, 970555), (40, 776444), (80, 388222), (160, 194111), (389, 79840), (499, 62240), (778, 39920), (998, 31120), (1556, 19960), (1945, 15968), (1996, 15560), (2495, 12448), (3112, 9980), (3890, 7984), (3992, 7780), (4990, 6224)]