19633520

素因数分解:

$2^4\times 5^1\times {\mathrm{245419}}^1$

素因数の和:245432

約数の個数: 20

約数和(自身を含む): 45648120

約数和(自身を除く): 26014600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245419, 490838, 981676, 1227095, 1963352, 2454190, 3926704, 4908380, 9816760, 19633520]

約数ペア:

[(1, 19633520), (2, 9816760), (4, 4908380), (5, 3926704), (8, 2454190), (10, 1963352), (16, 1227095), (20, 981676), (40, 490838), (80, 245419)]