20409424

素因数分解:

$2^4\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1223}}^1$

素因数の和:1387

約数の個数: 40

約数和(自身を含む): 45532800

約数和(自身を除く): 25123376

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 149, 298, 596, 1043, 1192, 1223, 2086, 2384, 2446, 4172, 4892, 8344, 8561, 9784, 16688, 17122, 19568, 34244, 68488, 136976, 182227, 364454, 728908, 1275589, 1457816, 2551178, 2915632, 5102356, 10204712, 20409424]

約数ペア:

[(1, 20409424), (2, 10204712), (4, 5102356), (7, 2915632), (8, 2551178), (14, 1457816), (16, 1275589), (28, 728908), (56, 364454), (112, 182227), (149, 136976), (298, 68488), (596, 34244), (1043, 19568), (1192, 17122), (1223, 16688), (2086, 9784), (2384, 8561), (2446, 8344), (4172, 4892)]