25619260

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 55742400

約数和(自身を除く): 30123140

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 157, 164, 199, 205, 314, 398, 410, 628, 785, 796, 820, 995, 1570, 1990, 3140, 3980, 6437, 8159, 12874, 16318, 25748, 31243, 32185, 32636, 40795, 62486, 64370, 81590, 124972, 128740, 156215, 163180, 312430, 624860, 1280963, 2561926, 5123852, 6404815, 12809630, 25619260]

約数ペア:

[(1, 25619260), (2, 12809630), (4, 6404815), (5, 5123852), (10, 2561926), (20, 1280963), (41, 624860), (82, 312430), (157, 163180), (164, 156215), (199, 128740), (205, 124972), (314, 81590), (398, 64370), (410, 62486), (628, 40795), (785, 32636), (796, 32185), (820, 31243), (995, 25748), (1570, 16318), (1990, 12874), (3140, 8159), (3980, 6437)]