18729872

素因数分解:

$2^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1879}}^1$

素因数の和:1983

約数の個数: 40

約数和(自身を含む): 41961600

約数和(自身を除く): 23231728

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 89, 112, 178, 356, 623, 712, 1246, 1424, 1879, 2492, 3758, 4984, 7516, 9968, 13153, 15032, 26306, 30064, 52612, 105224, 167231, 210448, 334462, 668924, 1170617, 1337848, 2341234, 2675696, 4682468, 9364936, 18729872]

約数ペア:

[(1, 18729872), (2, 9364936), (4, 4682468), (7, 2675696), (8, 2341234), (14, 1337848), (16, 1170617), (28, 668924), (56, 334462), (89, 210448), (112, 167231), (178, 105224), (356, 52612), (623, 30064), (712, 26306), (1246, 15032), (1424, 13153), (1879, 9968), (2492, 7516), (3758, 4984)]