20686540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{147761}}^1$

素因数の和:147777

約数の個数: 24

約数和(自身を含む): 49648032

約数和(自身を除く): 28961492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 147761, 295522, 591044, 738805, 1034327, 1477610, 2068654, 2955220, 4137308, 5171635, 10343270, 20686540]

約数ペア:

[(1, 20686540), (2, 10343270), (4, 5171635), (5, 4137308), (7, 2955220), (10, 2068654), (14, 1477610), (20, 1034327), (28, 738805), (35, 591044), (70, 295522), (140, 147761)]