251173297921

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{145270849}}^1$

素因数の和:145270888

約数の個数: 16

約数和(自身を含む): 325406704000

約数和(自身を除く): 74233406079

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 145270849, 1016895943, 1888521037, 2760146131, 13219647259, 19321022917, 35881899703, 251173297921]

約数ペア:

[(1, 251173297921), (7, 35881899703), (13, 19321022917), (19, 13219647259), (91, 2760146131), (133, 1888521037), (247, 1016895943), (1729, 145270849)]