71217280

素因数分解:

$2^7\times 5^1\times {\mathrm{223}}^1\times {\mathrm{499}}^1$

素因数の和:741

約数の個数: 64

約数和(自身を含む): 171360000

約数和(自身を除く): 100142720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 223, 320, 446, 499, 640, 892, 998, 1115, 1784, 1996, 2230, 2495, 3568, 3992, 4460, 4990, 7136, 7984, 8920, 9980, 14272, 15968, 17840, 19960, 28544, 31936, 35680, 39920, 63872, 71360, 79840, 111277, 142720, 159680, 222554, 319360, 445108, 556385, 890216, 1112770, 1780432, 2225540, 3560864, 4451080, 7121728, 8902160, 14243456, 17804320, 35608640, 71217280]

約数ペア:

[(1, 71217280), (2, 35608640), (4, 17804320), (5, 14243456), (8, 8902160), (10, 7121728), (16, 4451080), (20, 3560864), (32, 2225540), (40, 1780432), (64, 1112770), (80, 890216), (128, 556385), (160, 445108), (223, 319360), (320, 222554), (446, 159680), (499, 142720), (640, 111277), (892, 79840), (998, 71360), (1115, 63872), (1784, 39920), (1996, 35680), (2230, 31936), (2495, 28544), (3568, 19960), (3992, 17840), (4460, 15968), (4990, 14272), (7136, 9980), (7984, 8920)]