20186779280

素因数分解:

$2^4\times 5^1\times {\mathrm{151}}^1\times {\mathrm{971}}^1\times {\mathrm{1721}}^1$

素因数の和:2856

約数の個数: 80

約数和(自身を含む): 47321221248

約数和(自身を除く): 27134441968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 151, 302, 604, 755, 971, 1208, 1510, 1721, 1942, 2416, 3020, 3442, 3884, 4855, 6040, 6884, 7768, 8605, 9710, 12080, 13768, 15536, 17210, 19420, 27536, 34420, 38840, 68840, 77680, 137680, 146621, 259871, 293242, 519742, 586484, 733105, 1039484, 1172968, 1299355, 1466210, 1671091, 2078968, 2345936, 2598710, 2932420, 3342182, 4157936, 5197420, 5864840, 6684364, 8355455, 10394840, 11729680, 13368728, 16710910, 20789680, 26737456, 33421820, 66843640, 133687280, 252334741, 504669482, 1009338964, 1261673705, 2018677928, 2523347410, 4037355856, 5046694820, 10093389640, 20186779280]

約数ペア:

[(1, 20186779280), (2, 10093389640), (4, 5046694820), (5, 4037355856), (8, 2523347410), (10, 2018677928), (16, 1261673705), (20, 1009338964), (40, 504669482), (80, 252334741), (151, 133687280), (302, 66843640), (604, 33421820), (755, 26737456), (971, 20789680), (1208, 16710910), (1510, 13368728), (1721, 11729680), (1942, 10394840), (2416, 8355455), (3020, 6684364), (3442, 5864840), (3884, 5197420), (4855, 4157936), (6040, 3342182), (6884, 2932420), (7768, 2598710), (8605, 2345936), (9710, 2078968), (12080, 1671091), (13768, 1466210), (15536, 1299355), (17210, 1172968), (19420, 1039484), (27536, 733105), (34420, 586484), (38840, 519742), (68840, 293242), (77680, 259871), (137680, 146621)]