21887800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9949}}^1$

素因数の和:9976

約数の個数: 48

約数和(自身を含む): 55521000

約数和(自身を除く): 33633200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9949, 19898, 39796, 49745, 79592, 99490, 109439, 198980, 218878, 248725, 397960, 437756, 497450, 547195, 875512, 994900, 1094390, 1989800, 2188780, 2735975, 4377560, 5471950, 10943900, 21887800]

約数ペア:

[(1, 21887800), (2, 10943900), (4, 5471950), (5, 4377560), (8, 2735975), (10, 2188780), (11, 1989800), (20, 1094390), (22, 994900), (25, 875512), (40, 547195), (44, 497450), (50, 437756), (55, 397960), (88, 248725), (100, 218878), (110, 198980), (200, 109439), (220, 99490), (275, 79592), (440, 49745), (550, 39796), (1100, 19898), (2200, 9949)]