247717159921

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1\times {\mathrm{392857}}^1$

素因数の和:393325

約数の個数: 32

約数和(自身を含む): 325852139520

約数和(自身を除く): 78134979599

約数列:

[1, 7, 11, 19, 77, 133, 209, 431, 1463, 3017, 4741, 8189, 33187, 57323, 90079, 392857, 630553, 2749999, 4321427, 7464283, 30249989, 52249981, 82107113, 169321367, 574749791, 1185249569, 1862535037, 3217105973, 13037745259, 22519741811, 35388165703, 247717159921]

約数ペア:

[(1, 247717159921), (7, 35388165703), (11, 22519741811), (19, 13037745259), (77, 3217105973), (133, 1862535037), (209, 1185249569), (431, 574749791), (1463, 169321367), (3017, 82107113), (4741, 52249981), (8189, 30249989), (33187, 7464283), (57323, 4321427), (90079, 2749999), (392857, 630553)]