20521504

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1$

素因数の和:329

約数の個数: 48

約数和(自身を含む): 42287616

約数和(自身を除く): 21766112

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 137, 151, 248, 274, 302, 496, 548, 604, 992, 1096, 1208, 2192, 2416, 4247, 4384, 4681, 4832, 8494, 9362, 16988, 18724, 20687, 33976, 37448, 41374, 67952, 74896, 82748, 135904, 149792, 165496, 330992, 641297, 661984, 1282594, 2565188, 5130376, 10260752, 20521504]

約数ペア:

[(1, 20521504), (2, 10260752), (4, 5130376), (8, 2565188), (16, 1282594), (31, 661984), (32, 641297), (62, 330992), (124, 165496), (137, 149792), (151, 135904), (248, 82748), (274, 74896), (302, 67952), (496, 41374), (548, 37448), (604, 33976), (992, 20687), (1096, 18724), (1208, 16988), (2192, 9362), (2416, 8494), (4247, 4832), (4384, 4681)]