8663320

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1987}}^1$

素因数の和:2107

約数の個数: 32

約数和(自身を含む): 19681200

約数和(自身を除く): 11017880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 1987, 2180, 3974, 4360, 7948, 9935, 15896, 19870, 39740, 79480, 216583, 433166, 866332, 1082915, 1732664, 2165830, 4331660, 8663320]

約数ペア:

[(1, 8663320), (2, 4331660), (4, 2165830), (5, 1732664), (8, 1082915), (10, 866332), (20, 433166), (40, 216583), (109, 79480), (218, 39740), (436, 19870), (545, 15896), (872, 9935), (1090, 7948), (1987, 4360), (2180, 3974)]