18866320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1949}}^1$

素因数の和:1984

約数の個数: 60

約数和(自身を含む): 48239100

約数和(自身を除く): 29372780

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 1949, 2420, 3898, 4840, 7796, 9680, 9745, 15592, 19490, 21439, 31184, 38980, 42878, 77960, 85756, 107195, 155920, 171512, 214390, 235829, 343024, 428780, 471658, 857560, 943316, 1179145, 1715120, 1886632, 2358290, 3773264, 4716580, 9433160, 18866320]

約数ペア:

[(1, 18866320), (2, 9433160), (4, 4716580), (5, 3773264), (8, 2358290), (10, 1886632), (11, 1715120), (16, 1179145), (20, 943316), (22, 857560), (40, 471658), (44, 428780), (55, 343024), (80, 235829), (88, 214390), (110, 171512), (121, 155920), (176, 107195), (220, 85756), (242, 77960), (440, 42878), (484, 38980), (605, 31184), (880, 21439), (968, 19490), (1210, 15592), (1936, 9745), (1949, 9680), (2420, 7796), (3898, 4840)]