20555280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28549}}^1$

素因数の和:28568

約数の個数: 60

約数和(自身を含む): 69033900

約数和(自身を除く): 48478620

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28549, 57098, 85647, 114196, 142745, 171294, 228392, 256941, 285490, 342588, 428235, 456784, 513882, 570980, 685176, 856470, 1027764, 1141960, 1284705, 1370352, 1712940, 2055528, 2283920, 2569410, 3425880, 4111056, 5138820, 6851760, 10277640, 20555280]

約数ペア:

[(1, 20555280), (2, 10277640), (3, 6851760), (4, 5138820), (5, 4111056), (6, 3425880), (8, 2569410), (9, 2283920), (10, 2055528), (12, 1712940), (15, 1370352), (16, 1284705), (18, 1141960), (20, 1027764), (24, 856470), (30, 685176), (36, 570980), (40, 513882), (45, 456784), (48, 428235), (60, 342588), (72, 285490), (80, 256941), (90, 228392), (120, 171294), (144, 142745), (180, 114196), (240, 85647), (360, 57098), (720, 28549)]