21641578

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{90931}}^1$

素因数の和:90957

約数の個数: 16

約数和(自身を含む): 39282624

約数和(自身を除く): 17641046

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 90931, 181862, 636517, 1273034, 1545827, 3091654, 10820789, 21641578]

約数ペア:

[(1, 21641578), (2, 10820789), (7, 3091654), (14, 1545827), (17, 1273034), (34, 636517), (119, 181862), (238, 90931)]