22399280

素因数分解:

$2^4\times 5^1\times {\mathrm{279991}}^1$

素因数の和:280004

約数の個数: 20

約数和(自身を含む): 52078512

約数和(自身を除く): 29679232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 279991, 559982, 1119964, 1399955, 2239928, 2799910, 4479856, 5599820, 11199640, 22399280]

約数ペア:

[(1, 22399280), (2, 11199640), (4, 5599820), (5, 4479856), (8, 2799910), (10, 2239928), (16, 1399955), (20, 1119964), (40, 559982), (80, 279991)]