81206720

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{5179}}^1$

素因数の和:5210

約数の個数: 84

約数和(自身を含む): 224988120

約数和(自身を除く): 143781400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 784, 980, 1120, 1568, 1960, 2240, 3136, 3920, 5179, 7840, 10358, 15680, 20716, 25895, 36253, 41432, 51790, 72506, 82864, 103580, 145012, 165728, 181265, 207160, 253771, 290024, 331456, 362530, 414320, 507542, 580048, 725060, 828640, 1015084, 1160096, 1268855, 1450120, 1657280, 2030168, 2320192, 2537710, 2900240, 4060336, 5075420, 5800480, 8120672, 10150840, 11600960, 16241344, 20301680, 40603360, 81206720]

約数ペア:

[(1, 81206720), (2, 40603360), (4, 20301680), (5, 16241344), (7, 11600960), (8, 10150840), (10, 8120672), (14, 5800480), (16, 5075420), (20, 4060336), (28, 2900240), (32, 2537710), (35, 2320192), (40, 2030168), (49, 1657280), (56, 1450120), (64, 1268855), (70, 1160096), (80, 1015084), (98, 828640), (112, 725060), (140, 580048), (160, 507542), (196, 414320), (224, 362530), (245, 331456), (280, 290024), (320, 253771), (392, 207160), (448, 181265), (490, 165728), (560, 145012), (784, 103580), (980, 82864), (1120, 72506), (1568, 51790), (1960, 41432), (2240, 36253), (3136, 25895), (3920, 20716), (5179, 15680), (7840, 10358)]