20687178

素因数分解:

$2^1\times 3^1\times {\mathrm{73}}^2\times {\mathrm{647}}^1$

素因数の和:798

約数の個数: 24

約数和(自身を含む): 42013728

約数和(自身を除く): 21326550

約数列:

[1, 2, 3, 6, 73, 146, 219, 438, 647, 1294, 1941, 3882, 5329, 10658, 15987, 31974, 47231, 94462, 141693, 283386, 3447863, 6895726, 10343589, 20687178]

約数ペア:

[(1, 20687178), (2, 10343589), (3, 6895726), (6, 3447863), (73, 283386), (146, 141693), (219, 94462), (438, 47231), (647, 31974), (1294, 15987), (1941, 10658), (3882, 5329)]