40347440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{661}}^1$

素因数の和:790

約数の個数: 80

約数和(自身を含む): 108356160

約数和(自身を除く): 68008720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 218, 280, 436, 545, 560, 661, 763, 872, 1090, 1322, 1526, 1744, 2180, 2644, 3052, 3305, 3815, 4360, 4627, 5288, 6104, 6610, 7630, 8720, 9254, 10576, 12208, 13220, 15260, 18508, 23135, 26440, 30520, 37016, 46270, 52880, 61040, 72049, 74032, 92540, 144098, 185080, 288196, 360245, 370160, 504343, 576392, 720490, 1008686, 1152784, 1440980, 2017372, 2521715, 2881960, 4034744, 5043430, 5763920, 8069488, 10086860, 20173720, 40347440]

約数ペア:

[(1, 40347440), (2, 20173720), (4, 10086860), (5, 8069488), (7, 5763920), (8, 5043430), (10, 4034744), (14, 2881960), (16, 2521715), (20, 2017372), (28, 1440980), (35, 1152784), (40, 1008686), (56, 720490), (70, 576392), (80, 504343), (109, 370160), (112, 360245), (140, 288196), (218, 185080), (280, 144098), (436, 92540), (545, 74032), (560, 72049), (661, 61040), (763, 52880), (872, 46270), (1090, 37016), (1322, 30520), (1526, 26440), (1744, 23135), (2180, 18508), (2644, 15260), (3052, 13220), (3305, 12208), (3815, 10576), (4360, 9254), (4627, 8720), (5288, 7630), (6104, 6610)]