20471840

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5563}}^1$

素因数の和:5601

約数の個数: 48

約数和(自身を含む): 50476608

約数和(自身を除く): 30004768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 5563, 11126, 22252, 27815, 44504, 55630, 89008, 111260, 127949, 178016, 222520, 255898, 445040, 511796, 639745, 890080, 1023592, 1279490, 2047184, 2558980, 4094368, 5117960, 10235920, 20471840]

約数ペア:

[(1, 20471840), (2, 10235920), (4, 5117960), (5, 4094368), (8, 2558980), (10, 2047184), (16, 1279490), (20, 1023592), (23, 890080), (32, 639745), (40, 511796), (46, 445040), (80, 255898), (92, 222520), (115, 178016), (160, 127949), (184, 111260), (230, 89008), (368, 55630), (460, 44504), (736, 27815), (920, 22252), (1840, 11126), (3680, 5563)]