221999320

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{51869}}^1$

素因数の和:51987

約数の個数: 32

約数和(自身を含む): 504176400

約数和(自身を除く): 282177080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 51869, 103738, 207476, 259345, 414952, 518690, 1037380, 2074760, 5549983, 11099966, 22199932, 27749915, 44399864, 55499830, 110999660, 221999320]

約数ペア:

[(1, 221999320), (2, 110999660), (4, 55499830), (5, 44399864), (8, 27749915), (10, 22199932), (20, 11099966), (40, 5549983), (107, 2074760), (214, 1037380), (428, 518690), (535, 414952), (856, 259345), (1070, 207476), (2140, 103738), (4280, 51869)]