80694880

素因数分解:

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

素因数の和:792

約数の個数: 96

約数和(自身を含む): 220207680

約数和(自身を除く): 139512800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 109, 112, 140, 160, 218, 224, 280, 436, 545, 560, 661, 763, 872, 1090, 1120, 1322, 1526, 1744, 2180, 2644, 3052, 3305, 3488, 3815, 4360, 4627, 5288, 6104, 6610, 7630, 8720, 9254, 10576, 12208, 13220, 15260, 17440, 18508, 21152, 23135, 24416, 26440, 30520, 37016, 46270, 52880, 61040, 72049, 74032, 92540, 105760, 122080, 144098, 148064, 185080, 288196, 360245, 370160, 504343, 576392, 720490, 740320, 1008686, 1152784, 1440980, 2017372, 2305568, 2521715, 2881960, 4034744, 5043430, 5763920, 8069488, 10086860, 11527840, 16138976, 20173720, 40347440, 80694880]

約数ペア:

[(1, 80694880), (2, 40347440), (4, 20173720), (5, 16138976), (7, 11527840), (8, 10086860), (10, 8069488), (14, 5763920), (16, 5043430), (20, 4034744), (28, 2881960), (32, 2521715), (35, 2305568), (40, 2017372), (56, 1440980), (70, 1152784), (80, 1008686), (109, 740320), (112, 720490), (140, 576392), (160, 504343), (218, 370160), (224, 360245), (280, 288196), (436, 185080), (545, 148064), (560, 144098), (661, 122080), (763, 105760), (872, 92540), (1090, 74032), (1120, 72049), (1322, 61040), (1526, 52880), (1744, 46270), (2180, 37016), (2644, 30520), (3052, 26440), (3305, 24416), (3488, 23135), (3815, 21152), (4360, 18508), (4627, 17440), (5288, 15260), (6104, 13220), (6610, 12208), (7630, 10576), (8720, 9254)]