1287942721

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{907}}^1\times {\mathrm{5749}}^1$

素因数の和:6688

約数の個数: 16

約数和(自身を含む): 1461880000

約数和(自身を除く): 173937279

約数列:

[1, 13, 19, 247, 907, 5749, 11791, 17233, 74737, 109231, 224029, 1420003, 5214343, 67786459, 99072517, 1287942721]

約数ペア:

[(1, 1287942721), (13, 99072517), (19, 67786459), (247, 5214343), (907, 1420003), (5749, 224029), (11791, 109231), (17233, 74737)]