68789240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{132287}}^1$

素因数の和:132311

約数の個数: 32

約数和(自身を含む): 166682880

約数和(自身を除く): 97893640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 132287, 264574, 529148, 661435, 1058296, 1322870, 1719731, 2645740, 3439462, 5291480, 6878924, 8598655, 13757848, 17197310, 34394620, 68789240]

約数ペア:

[(1, 68789240), (2, 34394620), (4, 17197310), (5, 13757848), (8, 8598655), (10, 6878924), (13, 5291480), (20, 3439462), (26, 2645740), (40, 1719731), (52, 1322870), (65, 1058296), (104, 661435), (130, 529148), (260, 264574), (520, 132287)]