20803930

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{42457}}^1$

素因数の和:42478

約数の個数: 24

約数和(自身を含む): 43561908

約数和(自身を除く): 22757978

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 42457, 84914, 212285, 297199, 424570, 594398, 1485995, 2080393, 2971990, 4160786, 10401965, 20803930]

約数ペア:

[(1, 20803930), (2, 10401965), (5, 4160786), (7, 2971990), (10, 2080393), (14, 1485995), (35, 594398), (49, 424570), (70, 297199), (98, 212285), (245, 84914), (490, 42457)]