201978190

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:421

約数の個数: 64

約数和(自身を含む): 399795264

約数和(自身を除く): 197817074

約数列:

[1, 2, 5, 10, 17, 34, 37, 74, 85, 163, 170, 185, 197, 326, 370, 394, 629, 815, 985, 1258, 1630, 1970, 2771, 3145, 3349, 5542, 6031, 6290, 6698, 7289, 12062, 13855, 14578, 16745, 27710, 30155, 32111, 33490, 36445, 60310, 64222, 72890, 102527, 123913, 160555, 205054, 247826, 321110, 512635, 545887, 619565, 1025270, 1091774, 1188107, 1239130, 2376214, 2729435, 5458870, 5940535, 11881070, 20197819, 40395638, 100989095, 201978190]

約数ペア:

[(1, 201978190), (2, 100989095), (5, 40395638), (10, 20197819), (17, 11881070), (34, 5940535), (37, 5458870), (74, 2729435), (85, 2376214), (163, 1239130), (170, 1188107), (185, 1091774), (197, 1025270), (326, 619565), (370, 545887), (394, 512635), (629, 321110), (815, 247826), (985, 205054), (1258, 160555), (1630, 123913), (1970, 102527), (2771, 72890), (3145, 64222), (3349, 60310), (5542, 36445), (6031, 33490), (6290, 32111), (6698, 30155), (7289, 27710), (12062, 16745), (13855, 14578)]