68521640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{155731}}^1$

素因数の和:155753

約数の個数: 32

約数和(自身を含む): 168190560

約数和(自身を除く): 99668920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 155731, 311462, 622924, 778655, 1245848, 1557310, 1713041, 3114620, 3426082, 6229240, 6852164, 8565205, 13704328, 17130410, 34260820, 68521640]

約数ペア:

[(1, 68521640), (2, 34260820), (4, 17130410), (5, 13704328), (8, 8565205), (10, 6852164), (11, 6229240), (20, 3426082), (22, 3114620), (40, 1713041), (44, 1557310), (55, 1245848), (88, 778655), (110, 622924), (220, 311462), (440, 155731)]