20006840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71453}}^1$

素因数の和:71471

約数の個数: 32

約数和(自身を含む): 51446880

約数和(自身を除く): 31440040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71453, 142906, 285812, 357265, 500171, 571624, 714530, 1000342, 1429060, 2000684, 2500855, 2858120, 4001368, 5001710, 10003420, 20006840]

約数ペア:

[(1, 20006840), (2, 10003420), (4, 5001710), (5, 4001368), (7, 2858120), (8, 2500855), (10, 2000684), (14, 1429060), (20, 1000342), (28, 714530), (35, 571624), (40, 500171), (56, 357265), (70, 285812), (140, 142906), (280, 71453)]