20391632

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{277}}^1$

素因数の和:435

約数の個数: 40

約数和(自身を含む): 40952736

約数和(自身を除く): 20561104

約数列:

[1, 2, 4, 8, 16, 43, 86, 107, 172, 214, 277, 344, 428, 554, 688, 856, 1108, 1712, 2216, 4432, 4601, 9202, 11911, 18404, 23822, 29639, 36808, 47644, 59278, 73616, 95288, 118556, 190576, 237112, 474224, 1274477, 2548954, 5097908, 10195816, 20391632]

約数ペア:

[(1, 20391632), (2, 10195816), (4, 5097908), (8, 2548954), (16, 1274477), (43, 474224), (86, 237112), (107, 190576), (172, 118556), (214, 95288), (277, 73616), (344, 59278), (428, 47644), (554, 36808), (688, 29639), (856, 23822), (1108, 18404), (1712, 11911), (2216, 9202), (4432, 4601)]