209428945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{81017}}^1$

素因数の和:81080

約数の個数: 16

約数和(自身を含む): 279998208

約数和(自身を除く): 70569263

約数列:

[1, 5, 11, 47, 55, 235, 517, 2585, 81017, 405085, 891187, 3807799, 4455935, 19038995, 41885789, 209428945]

約数ペア:

[(1, 209428945), (5, 41885789), (11, 19038995), (47, 4455935), (55, 3807799), (235, 891187), (517, 405085), (2585, 81017)]