21167741900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2679461}}^1$

素因数の和:2679554

約数の個数: 36

約数和(自身を含む): 46515460320

約数和(自身を除く): 25347718420

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900, 2679461, 5358922, 10717844, 13397305, 26794610, 53589220, 66986525, 133973050, 211677419, 267946100, 423354838, 846709676, 1058387095, 2116774190, 4233548380, 5291935475, 10583870950, 21167741900]

約数ペア:

[(1, 21167741900), (2, 10583870950), (4, 5291935475), (5, 4233548380), (10, 2116774190), (20, 1058387095), (25, 846709676), (50, 423354838), (79, 267946100), (100, 211677419), (158, 133973050), (316, 66986525), (395, 53589220), (790, 26794610), (1580, 13397305), (1975, 10717844), (3950, 5358922), (7900, 2679461)]