1282970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:230

約数の個数: 32

約数和(自身を含む): 2540160

約数和(自身を除く): 1257190

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 130, 139, 142, 278, 355, 695, 710, 923, 1390, 1807, 1846, 3614, 4615, 9035, 9230, 9869, 18070, 19738, 49345, 98690, 128297, 256594, 641485, 1282970]

約数ペア:

[(1, 1282970), (2, 641485), (5, 256594), (10, 128297), (13, 98690), (26, 49345), (65, 19738), (71, 18070), (130, 9869), (139, 9230), (142, 9035), (278, 4615), (355, 3614), (695, 1846), (710, 1807), (923, 1390)]