201855640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{720913}}^1$

素因数の和:720931

約数の個数: 32

約数和(自身を含む): 519058080

約数和(自身を除く): 317202440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 720913, 1441826, 2883652, 3604565, 5046391, 5767304, 7209130, 10092782, 14418260, 20185564, 25231955, 28836520, 40371128, 50463910, 100927820, 201855640]

約数ペア:

[(1, 201855640), (2, 100927820), (4, 50463910), (5, 40371128), (7, 28836520), (8, 25231955), (10, 20185564), (14, 14418260), (20, 10092782), (28, 7209130), (35, 5767304), (40, 5046391), (56, 3604565), (70, 2883652), (140, 1441826), (280, 720913)]