21165960109

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{9511}}^1\times {\mathrm{18701}}^1$

素因数の和:28236

約数の個数: 16

約数和(自身を含む): 25616653056

約数和(自身を除く): 4450692947

約数列:

[1, 7, 17, 119, 9511, 18701, 66577, 130907, 161687, 317917, 1131809, 2225419, 177865211, 1245056477, 3023708587, 21165960109]

約数ペア:

[(1, 21165960109), (7, 3023708587), (17, 1245056477), (119, 177865211), (9511, 2225419), (18701, 1131809), (66577, 317917), (130907, 161687)]