13638140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21997}}^1$

素因数の和:22037

約数の個数: 24

約数和(自身を含む): 29565312

約数和(自身を除く): 15927172

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 21997, 43994, 87988, 109985, 219970, 439940, 681907, 1363814, 2727628, 3409535, 6819070, 13638140]

約数ペア:

[(1, 13638140), (2, 6819070), (4, 3409535), (5, 2727628), (10, 1363814), (20, 681907), (31, 439940), (62, 219970), (124, 109985), (155, 87988), (310, 43994), (620, 21997)]