649502660

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1\times {\mathrm{1187}}^1$

素因数の和:1556

約数の個数: 48

約数和(自身を含む): 1383117120

約数和(自身を除く): 733614460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 251, 436, 502, 545, 1004, 1090, 1187, 1255, 2180, 2374, 2510, 4748, 5020, 5935, 11870, 23740, 27359, 54718, 109436, 129383, 136795, 258766, 273590, 297937, 517532, 547180, 595874, 646915, 1191748, 1293830, 1489685, 2587660, 2979370, 5958740, 32475133, 64950266, 129900532, 162375665, 324751330, 649502660]

約数ペア:

[(1, 649502660), (2, 324751330), (4, 162375665), (5, 129900532), (10, 64950266), (20, 32475133), (109, 5958740), (218, 2979370), (251, 2587660), (436, 1489685), (502, 1293830), (545, 1191748), (1004, 646915), (1090, 595874), (1187, 547180), (1255, 517532), (2180, 297937), (2374, 273590), (2510, 258766), (4748, 136795), (5020, 129383), (5935, 109436), (11870, 54718), (23740, 27359)]