618140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1037

約数の個数: 24

約数和(自身を含む): 1341312

約数和(自身を除く): 723172

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 997, 1994, 3988, 4985, 9970, 19940, 30907, 61814, 123628, 154535, 309070, 618140]

約数ペア:

[(1, 618140), (2, 309070), (4, 154535), (5, 123628), (10, 61814), (20, 30907), (31, 19940), (62, 9970), (124, 4985), (155, 3988), (310, 1994), (620, 997)]