203729900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2081}}^1$

素因数の和:2195

約数の個数: 72

約数和(自身を含む): 487937520

約数和(自身を除く): 284207620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 89, 100, 110, 178, 220, 275, 356, 445, 550, 890, 979, 1100, 1780, 1958, 2081, 2225, 3916, 4162, 4450, 4895, 8324, 8900, 9790, 10405, 19580, 20810, 22891, 24475, 41620, 45782, 48950, 52025, 91564, 97900, 104050, 114455, 185209, 208100, 228910, 370418, 457820, 572275, 740836, 926045, 1144550, 1852090, 2037299, 2289100, 3704180, 4074598, 4630225, 8149196, 9260450, 10186495, 18520900, 20372990, 40745980, 50932475, 101864950, 203729900]

約数ペア:

[(1, 203729900), (2, 101864950), (4, 50932475), (5, 40745980), (10, 20372990), (11, 18520900), (20, 10186495), (22, 9260450), (25, 8149196), (44, 4630225), (50, 4074598), (55, 3704180), (89, 2289100), (100, 2037299), (110, 1852090), (178, 1144550), (220, 926045), (275, 740836), (356, 572275), (445, 457820), (550, 370418), (890, 228910), (979, 208100), (1100, 185209), (1780, 114455), (1958, 104050), (2081, 97900), (2225, 91564), (3916, 52025), (4162, 48950), (4450, 45782), (4895, 41620), (8324, 24475), (8900, 22891), (9790, 20810), (10405, 19580)]