19587440

素因数分解:

$2^4\times 5^1\times {\mathrm{244843}}^1$

素因数の和:244856

約数の個数: 20

約数和(自身を含む): 45540984

約数和(自身を除く): 25953544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 244843, 489686, 979372, 1224215, 1958744, 2448430, 3917488, 4896860, 9793720, 19587440]

約数ペア:

[(1, 19587440), (2, 9793720), (4, 4896860), (5, 3917488), (8, 2448430), (10, 1958744), (16, 1224215), (20, 979372), (40, 489686), (80, 244843)]