20915020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149393}}^1$

素因数の和:149409

約数の個数: 24

約数和(自身を含む): 50196384

約数和(自身を除く): 29281364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149393, 298786, 597572, 746965, 1045751, 1493930, 2091502, 2987860, 4183004, 5228755, 10457510, 20915020]

約数ペア:

[(1, 20915020), (2, 10457510), (4, 5228755), (5, 4183004), (7, 2987860), (10, 2091502), (14, 1493930), (20, 1045751), (28, 746965), (35, 597572), (70, 298786), (140, 149393)]