20249860

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{6449}}^1$

素因数の和:6615

約数の個数: 24

約数和(自身を含む): 42802200

約数和(自身を除く): 22552340

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 6449, 12898, 25796, 32245, 64490, 128980, 1012493, 2024986, 4049972, 5062465, 10124930, 20249860]

約数ペア:

[(1, 20249860), (2, 10124930), (4, 5062465), (5, 4049972), (10, 2024986), (20, 1012493), (157, 128980), (314, 64490), (628, 32245), (785, 25796), (1570, 12898), (3140, 6449)]