219721840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211271}}^1$

素因数の和:211297

約数の個数: 40

約数和(自身を含む): 550152288

約数和(自身を除く): 330430448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 211271, 422542, 845084, 1056355, 1690168, 2112710, 2746523, 3380336, 4225420, 5493046, 8450840, 10986092, 13732615, 16901680, 21972184, 27465230, 43944368, 54930460, 109860920, 219721840]

約数ペア:

[(1, 219721840), (2, 109860920), (4, 54930460), (5, 43944368), (8, 27465230), (10, 21972184), (13, 16901680), (16, 13732615), (20, 10986092), (26, 8450840), (40, 5493046), (52, 4225420), (65, 3380336), (80, 2746523), (104, 2112710), (130, 1690168), (208, 1056355), (260, 845084), (520, 422542), (1040, 211271)]