21507198

素因数分解:

$2^1\times 3^1\times {\mathrm{163}}^1\times {\mathrm{21991}}^1$

素因数の和:22159

約数の個数: 16

約数和(自身を含む): 43280256

約数和(自身を除く): 21773058

約数列:

[1, 2, 3, 6, 163, 326, 489, 978, 21991, 43982, 65973, 131946, 3584533, 7169066, 10753599, 21507198]

約数ペア:

[(1, 21507198), (2, 10753599), (3, 7169066), (6, 3584533), (163, 131946), (326, 65973), (489, 43982), (978, 21991)]