21001246

素因数分解:

$2^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{9203}}^1$

素因数の和:9375

約数の個数: 16

約数和(自身を含む): 36226944

約数和(自身を除く): 15225698

約数列:

[1, 2, 7, 14, 163, 326, 1141, 2282, 9203, 18406, 64421, 128842, 1500089, 3000178, 10500623, 21001246]

約数ペア:

[(1, 21001246), (2, 10500623), (7, 3000178), (14, 1500089), (163, 128842), (326, 64421), (1141, 18406), (2282, 9203)]