21599990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{93913}}^1$

素因数の和:93943

約数の個数: 16

約数和(自身を含む): 40570848

約数和(自身を除く): 18970858

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 93913, 187826, 469565, 939130, 2159999, 4319998, 10799995, 21599990]

約数ペア:

[(1, 21599990), (2, 10799995), (5, 4319998), (10, 2159999), (23, 939130), (46, 469565), (115, 187826), (230, 93913)]