3988780

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^2\times {\mathrm{71}}^1$

素因数の和:186

約数の個数: 36

約数和(自身を含む): 8657712

約数和(自身を除く): 4668932

約数列:

[1, 2, 4, 5, 10, 20, 53, 71, 106, 142, 212, 265, 284, 355, 530, 710, 1060, 1420, 2809, 3763, 5618, 7526, 11236, 14045, 15052, 18815, 28090, 37630, 56180, 75260, 199439, 398878, 797756, 997195, 1994390, 3988780]

約数ペア:

[(1, 3988780), (2, 1994390), (4, 997195), (5, 797756), (10, 398878), (20, 199439), (53, 75260), (71, 56180), (106, 37630), (142, 28090), (212, 18815), (265, 15052), (284, 14045), (355, 11236), (530, 7526), (710, 5618), (1060, 3763), (1420, 2809)]