21278968

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{3329}}^1$

素因数の和:3399

約数の個数: 32

約数和(自身を含む): 43156800

約数和(自身を除く): 21877832

約数列:

[1, 2, 4, 8, 17, 34, 47, 68, 94, 136, 188, 376, 799, 1598, 3196, 3329, 6392, 6658, 13316, 26632, 56593, 113186, 156463, 226372, 312926, 452744, 625852, 1251704, 2659871, 5319742, 10639484, 21278968]

約数ペア:

[(1, 21278968), (2, 10639484), (4, 5319742), (8, 2659871), (17, 1251704), (34, 625852), (47, 452744), (68, 312926), (94, 226372), (136, 156463), (188, 113186), (376, 56593), (799, 26632), (1598, 13316), (3196, 6658), (3329, 6392)]