20973780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1069}}^1$

素因数の和:1193

約数の個数: 72

約数和(自身を含む): 64264200

約数和(自身を除く): 43290420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 1069, 1090, 1308, 1635, 1962, 2138, 2180, 3207, 3270, 3924, 4276, 4905, 5345, 6414, 6540, 9621, 9810, 10690, 12828, 16035, 19242, 19620, 21380, 32070, 38484, 48105, 64140, 96210, 116521, 192420, 233042, 349563, 466084, 582605, 699126, 1048689, 1165210, 1398252, 1747815, 2097378, 2330420, 3495630, 4194756, 5243445, 6991260, 10486890, 20973780]

約数ペア:

[(1, 20973780), (2, 10486890), (3, 6991260), (4, 5243445), (5, 4194756), (6, 3495630), (9, 2330420), (10, 2097378), (12, 1747815), (15, 1398252), (18, 1165210), (20, 1048689), (30, 699126), (36, 582605), (45, 466084), (60, 349563), (90, 233042), (109, 192420), (180, 116521), (218, 96210), (327, 64140), (436, 48105), (545, 38484), (654, 32070), (981, 21380), (1069, 19620), (1090, 19242), (1308, 16035), (1635, 12828), (1962, 10690), (2138, 9810), (2180, 9621), (3207, 6540), (3270, 6414), (3924, 5345), (4276, 4905)]