68990285

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{21661}}^1$

素因数の和:21693

約数の個数: 24

約数和(自身を含む): 103717656

約数和(自身を除く): 34727371

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 21661, 108305, 151627, 281593, 758135, 1061389, 1407965, 1971151, 5306945, 9855755, 13798057, 68990285]

約数ペア:

[(1, 68990285), (5, 13798057), (7, 9855755), (13, 5306945), (35, 1971151), (49, 1407965), (65, 1061389), (91, 758135), (245, 281593), (455, 151627), (637, 108305), (3185, 21661)]