20039320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71569}}^1$

素因数の和:71587

約数の個数: 32

約数和(自身を含む): 51530400

約数和(自身を除く): 31491080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71569, 143138, 286276, 357845, 500983, 572552, 715690, 1001966, 1431380, 2003932, 2504915, 2862760, 4007864, 5009830, 10019660, 20039320]

約数ペア:

[(1, 20039320), (2, 10019660), (4, 5009830), (5, 4007864), (7, 2862760), (8, 2504915), (10, 2003932), (14, 1431380), (20, 1001966), (28, 715690), (35, 572552), (40, 500983), (56, 357845), (70, 286276), (140, 143138), (280, 71569)]