18639320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{66569}}^1$

素因数の和:66587

約数の個数: 32

約数和(自身を含む): 47930400

約数和(自身を除く): 29291080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 66569, 133138, 266276, 332845, 465983, 532552, 665690, 931966, 1331380, 1863932, 2329915, 2662760, 3727864, 4659830, 9319660, 18639320]

約数ペア:

[(1, 18639320), (2, 9319660), (4, 4659830), (5, 3727864), (7, 2662760), (8, 2329915), (10, 1863932), (14, 1331380), (20, 931966), (28, 665690), (35, 532552), (40, 465983), (56, 332845), (70, 266276), (140, 133138), (280, 66569)]