21568120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77029}}^1$

素因数の和:77047

約数の個数: 32

約数和(自身を含む): 55461600

約数和(自身を除く): 33893480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77029, 154058, 308116, 385145, 539203, 616232, 770290, 1078406, 1540580, 2156812, 2696015, 3081160, 4313624, 5392030, 10784060, 21568120]

約数ペア:

[(1, 21568120), (2, 10784060), (4, 5392030), (5, 4313624), (7, 3081160), (8, 2696015), (10, 2156812), (14, 1540580), (20, 1078406), (28, 770290), (35, 616232), (40, 539203), (56, 385145), (70, 308116), (140, 154058), (280, 77029)]