20917968

素因数分解:

$2^4\times 3^1\times {\mathrm{263}}^1\times {\mathrm{1657}}^1$

素因数の和:1931

約数の個数: 40

約数和(自身を含む): 54276288

約数和(自身を除く): 33358320

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 263, 526, 789, 1052, 1578, 1657, 2104, 3156, 3314, 4208, 4971, 6312, 6628, 9942, 12624, 13256, 19884, 26512, 39768, 79536, 435791, 871582, 1307373, 1743164, 2614746, 3486328, 5229492, 6972656, 10458984, 20917968]

約数ペア:

[(1, 20917968), (2, 10458984), (3, 6972656), (4, 5229492), (6, 3486328), (8, 2614746), (12, 1743164), (16, 1307373), (24, 871582), (48, 435791), (263, 79536), (526, 39768), (789, 26512), (1052, 19884), (1578, 13256), (1657, 12624), (2104, 9942), (3156, 6628), (3314, 6312), (4208, 4971)]