21454790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9887}}^1$

素因数の和:9932

約数の個数: 32

約数和(自身を含む): 45563904

約数和(自身を除く): 24109114

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 9887, 19774, 49435, 69209, 98870, 138418, 306497, 346045, 612994, 692090, 1532485, 2145479, 3064970, 4290958, 10727395, 21454790]

約数ペア:

[(1, 21454790), (2, 10727395), (5, 4290958), (7, 3064970), (10, 2145479), (14, 1532485), (31, 692090), (35, 612994), (62, 346045), (70, 306497), (155, 138418), (217, 98870), (310, 69209), (434, 49435), (1085, 19774), (2170, 9887)]