21110240

素因数分解:

$2^5\times 5^1\times {\mathrm{131939}}^1$

素因数の和:131954

約数の個数: 24

約数和(自身を含む): 49873320

約数和(自身を除く): 28763080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131939, 263878, 527756, 659695, 1055512, 1319390, 2111024, 2638780, 4222048, 5277560, 10555120, 21110240]

約数ペア:

[(1, 21110240), (2, 10555120), (4, 5277560), (5, 4222048), (8, 2638780), (10, 2111024), (16, 1319390), (20, 1055512), (32, 659695), (40, 527756), (80, 263878), (160, 131939)]