21556560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89819}}^1$

素因数の和:89835

約数の個数: 40

約数和(自身を含む): 66826080

約数和(自身を除く): 45269520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 89819, 179638, 269457, 359276, 449095, 538914, 718552, 898190, 1077828, 1347285, 1437104, 1796380, 2155656, 2694570, 3592760, 4311312, 5389140, 7185520, 10778280, 21556560]

約数ペア:

[(1, 21556560), (2, 10778280), (3, 7185520), (4, 5389140), (5, 4311312), (6, 3592760), (8, 2694570), (10, 2155656), (12, 1796380), (15, 1437104), (16, 1347285), (20, 1077828), (24, 898190), (30, 718552), (40, 538914), (48, 449095), (60, 359276), (80, 269457), (120, 179638), (240, 89819)]