19178480

素因数分解:

$2^4\times 5^1\times {\mathrm{239731}}^1$

素因数の和:239744

約数の個数: 20

約数和(自身を含む): 44590152

約数和(自身を除く): 25411672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239731, 479462, 958924, 1198655, 1917848, 2397310, 3835696, 4794620, 9589240, 19178480]

約数ペア:

[(1, 19178480), (2, 9589240), (4, 4794620), (5, 3835696), (8, 2397310), (10, 1917848), (16, 1198655), (20, 958924), (40, 479462), (80, 239731)]