21247600

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^2\times {\mathrm{439}}^1$

素因数の和:479

約数の個数: 90

約数和(自身を含む): 56237720

約数和(自身を除く): 34990120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 121, 176, 200, 220, 242, 275, 400, 439, 440, 484, 550, 605, 878, 880, 968, 1100, 1210, 1756, 1936, 2195, 2200, 2420, 3025, 3512, 4390, 4400, 4829, 4840, 6050, 7024, 8780, 9658, 9680, 10975, 12100, 17560, 19316, 21950, 24145, 24200, 35120, 38632, 43900, 48290, 48400, 53119, 77264, 87800, 96580, 106238, 120725, 175600, 193160, 212476, 241450, 265595, 386320, 424952, 482900, 531190, 849904, 965800, 1062380, 1327975, 1931600, 2124760, 2655950, 4249520, 5311900, 10623800, 21247600]

約数ペア:

[(1, 21247600), (2, 10623800), (4, 5311900), (5, 4249520), (8, 2655950), (10, 2124760), (11, 1931600), (16, 1327975), (20, 1062380), (22, 965800), (25, 849904), (40, 531190), (44, 482900), (50, 424952), (55, 386320), (80, 265595), (88, 241450), (100, 212476), (110, 193160), (121, 175600), (176, 120725), (200, 106238), (220, 96580), (242, 87800), (275, 77264), (400, 53119), (439, 48400), (440, 48290), (484, 43900), (550, 38632), (605, 35120), (878, 24200), (880, 24145), (968, 21950), (1100, 19316), (1210, 17560), (1756, 12100), (1936, 10975), (2195, 9680), (2200, 9658), (2420, 8780), (3025, 7024), (3512, 6050), (4390, 4840), (4400, 4829)]