68789680

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{19997}}^1$

素因数の和:20053

約数の個数: 40

約数和(自身を含む): 163663632

約数和(自身を除く): 94873952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 19997, 39994, 79988, 99985, 159976, 199970, 319952, 399940, 799880, 859871, 1599760, 1719742, 3439484, 4299355, 6878968, 8598710, 13757936, 17197420, 34394840, 68789680]

約数ペア:

[(1, 68789680), (2, 34394840), (4, 17197420), (5, 13757936), (8, 8598710), (10, 6878968), (16, 4299355), (20, 3439484), (40, 1719742), (43, 1599760), (80, 859871), (86, 799880), (172, 399940), (215, 319952), (344, 199970), (430, 159976), (688, 99985), (860, 79988), (1720, 39994), (3440, 19997)]