21104986

素因数分解:

$2^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{6947}}^1$

素因数の和:6994

約数の個数: 24

約数和(自身を含む): 38019456

約数和(自身を除く): 16914470

約数列:

[1, 2, 7, 14, 31, 49, 62, 98, 217, 434, 1519, 3038, 6947, 13894, 48629, 97258, 215357, 340403, 430714, 680806, 1507499, 3014998, 10552493, 21104986]

約数ペア:

[(1, 21104986), (2, 10552493), (7, 3014998), (14, 1507499), (31, 680806), (49, 430714), (62, 340403), (98, 215357), (217, 97258), (434, 48629), (1519, 13894), (3038, 6947)]