21172396

素因数分解:

$2^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{4639}}^1$

素因数の和:4813

約数の個数: 24

約数和(自身を含む): 42613760

約数和(自身を除く): 21441364

約数列:

[1, 2, 4, 7, 14, 28, 163, 326, 652, 1141, 2282, 4564, 4639, 9278, 18556, 32473, 64946, 129892, 756157, 1512314, 3024628, 5293099, 10586198, 21172396]

約数ペア:

[(1, 21172396), (2, 10586198), (4, 5293099), (7, 3024628), (14, 1512314), (28, 756157), (163, 129892), (326, 64946), (652, 32473), (1141, 18556), (2282, 9278), (4564, 4639)]