20673712

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{199}}^1$

素因数の和:401

約数の個数: 40

約数和(自身を含む): 41465600

約数和(自身を除く): 20791888

約数列:

[1, 2, 4, 8, 16, 43, 86, 151, 172, 199, 302, 344, 398, 604, 688, 796, 1208, 1592, 2416, 3184, 6493, 8557, 12986, 17114, 25972, 30049, 34228, 51944, 60098, 68456, 103888, 120196, 136912, 240392, 480784, 1292107, 2584214, 5168428, 10336856, 20673712]

約数ペア:

[(1, 20673712), (2, 10336856), (4, 5168428), (8, 2584214), (16, 1292107), (43, 480784), (86, 240392), (151, 136912), (172, 120196), (199, 103888), (302, 68456), (344, 60098), (398, 51944), (604, 34228), (688, 30049), (796, 25972), (1208, 17114), (1592, 12986), (2416, 8557), (3184, 6493)]