28681960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17489}}^1$

素因数の和:17541

約数の個数: 32

約数和(自身を含む): 66112200

約数和(自身を除く): 37430240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17489, 34978, 69956, 87445, 139912, 174890, 349780, 699560, 717049, 1434098, 2868196, 3585245, 5736392, 7170490, 14340980, 28681960]

約数ペア:

[(1, 28681960), (2, 14340980), (4, 7170490), (5, 5736392), (8, 3585245), (10, 2868196), (20, 1434098), (40, 717049), (41, 699560), (82, 349780), (164, 174890), (205, 139912), (328, 87445), (410, 69956), (820, 34978), (1640, 17489)]