204118520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1\times {\mathrm{547}}^1$

素因数の和:1068

約数の個数: 64

約数和(自身を含む): 485308800

約数和(自身を除く): 281190280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 491, 547, 760, 982, 1094, 1964, 2188, 2455, 2735, 3928, 4376, 4910, 5470, 9329, 9820, 10393, 10940, 18658, 19640, 20786, 21880, 37316, 41572, 46645, 51965, 74632, 83144, 93290, 103930, 186580, 207860, 268577, 373160, 415720, 537154, 1074308, 1342885, 2148616, 2685770, 5102963, 5371540, 10205926, 10743080, 20411852, 25514815, 40823704, 51029630, 102059260, 204118520]

約数ペア:

[(1, 204118520), (2, 102059260), (4, 51029630), (5, 40823704), (8, 25514815), (10, 20411852), (19, 10743080), (20, 10205926), (38, 5371540), (40, 5102963), (76, 2685770), (95, 2148616), (152, 1342885), (190, 1074308), (380, 537154), (491, 415720), (547, 373160), (760, 268577), (982, 207860), (1094, 186580), (1964, 103930), (2188, 93290), (2455, 83144), (2735, 74632), (3928, 51965), (4376, 46645), (4910, 41572), (5470, 37316), (9329, 21880), (9820, 20786), (10393, 19640), (10940, 18658)]