19418480

素因数分解:

$2^4\times 5^1\times {\mathrm{242731}}^1$

素因数の和:242744

約数の個数: 20

約数和(自身を含む): 45148152

約数和(自身を除く): 25729672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 242731, 485462, 970924, 1213655, 1941848, 2427310, 3883696, 4854620, 9709240, 19418480]

約数ペア:

[(1, 19418480), (2, 9709240), (4, 4854620), (5, 3883696), (8, 2427310), (10, 1941848), (16, 1213655), (20, 970924), (40, 485462), (80, 242731)]