19419760

素因数分解:

$2^4\times 5^1\times {\mathrm{242747}}^1$

素因数の和:242760

約数の個数: 20

約数和(自身を含む): 45151128

約数和(自身を除く): 25731368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 242747, 485494, 970988, 1213735, 1941976, 2427470, 3883952, 4854940, 9709880, 19419760]

約数ペア:

[(1, 19419760), (2, 9709880), (4, 4854940), (5, 3883952), (8, 2427470), (10, 1941976), (16, 1213735), (20, 970988), (40, 485494), (80, 242747)]