21191968

素因数分解:

$2^5\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1063}}^1$

素因数の和:1169

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 27071072

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 89, 112, 178, 224, 356, 623, 712, 1063, 1246, 1424, 2126, 2492, 2848, 4252, 4984, 7441, 8504, 9968, 14882, 17008, 19936, 29764, 34016, 59528, 94607, 119056, 189214, 238112, 378428, 662249, 756856, 1324498, 1513712, 2648996, 3027424, 5297992, 10595984, 21191968]

約数ペア:

[(1, 21191968), (2, 10595984), (4, 5297992), (7, 3027424), (8, 2648996), (14, 1513712), (16, 1324498), (28, 756856), (32, 662249), (56, 378428), (89, 238112), (112, 189214), (178, 119056), (224, 94607), (356, 59528), (623, 34016), (712, 29764), (1063, 19936), (1246, 17008), (1424, 14882), (2126, 9968), (2492, 8504), (2848, 7441), (4252, 4984)]