21093160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47939}}^1$

素因数の和:47961

約数の個数: 32

約数和(自身を含む): 51775200

約数和(自身を除く): 30682040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47939, 95878, 191756, 239695, 383512, 479390, 527329, 958780, 1054658, 1917560, 2109316, 2636645, 4218632, 5273290, 10546580, 21093160]

約数ペア:

[(1, 21093160), (2, 10546580), (4, 5273290), (5, 4218632), (8, 2636645), (10, 2109316), (11, 1917560), (20, 1054658), (22, 958780), (40, 527329), (44, 479390), (55, 383512), (88, 239695), (110, 191756), (220, 95878), (440, 47939)]