205121950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{461}}^1\times {\mathrm{809}}^1$

素因数の和:1293

約数の個数: 48

約数和(自身を含む): 417629520

約数和(自身を除く): 212507570

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 275, 461, 550, 809, 922, 1618, 2305, 4045, 4610, 5071, 8090, 8899, 10142, 11525, 17798, 20225, 23050, 25355, 40450, 44495, 50710, 88990, 126775, 222475, 253550, 372949, 444950, 745898, 1864745, 3729490, 4102439, 8204878, 9323725, 18647450, 20512195, 41024390, 102560975, 205121950]

約数ペア:

[(1, 205121950), (2, 102560975), (5, 41024390), (10, 20512195), (11, 18647450), (22, 9323725), (25, 8204878), (50, 4102439), (55, 3729490), (110, 1864745), (275, 745898), (461, 444950), (550, 372949), (809, 253550), (922, 222475), (1618, 126775), (2305, 88990), (4045, 50710), (4610, 44495), (5071, 40450), (8090, 25355), (8899, 23050), (10142, 20225), (11525, 17798)]