21978518

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{17471}}^1$

素因数の和:17527

約数の個数: 16

約数和(自身を含む): 35852544

約数和(自身を除く): 13874026

約数列:

[1, 2, 17, 34, 37, 74, 629, 1258, 17471, 34942, 297007, 594014, 646427, 1292854, 10989259, 21978518]

約数ペア:

[(1, 21978518), (2, 10989259), (17, 1292854), (34, 646427), (37, 594014), (74, 297007), (629, 34942), (1258, 17471)]