21578986

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{383}}^1$

素因数の和:606

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 16741142

約数列:

[1, 2, 11, 13, 22, 26, 143, 197, 286, 383, 394, 766, 2167, 2561, 4213, 4334, 4979, 5122, 8426, 9958, 28171, 54769, 56342, 75451, 109538, 150902, 829961, 980863, 1659922, 1961726, 10789493, 21578986]

約数ペア:

[(1, 21578986), (2, 10789493), (11, 1961726), (13, 1659922), (22, 980863), (26, 829961), (143, 150902), (197, 109538), (286, 75451), (383, 56342), (394, 54769), (766, 28171), (2167, 9958), (2561, 8426), (4213, 5122), (4334, 4979)]