21033405

素因数分解:

$3^3\times 5^1\times {\mathrm{347}}^1\times {\mathrm{449}}^1$

素因数の和:810

約数の個数: 32

約数和(自身を含む): 37584000

約数和(自身を除く): 16550595

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 347, 449, 1041, 1347, 1735, 2245, 3123, 4041, 5205, 6735, 9369, 12123, 15615, 20205, 46845, 60615, 155803, 467409, 779015, 1402227, 2337045, 4206681, 7011135, 21033405]

約数ペア:

[(1, 21033405), (3, 7011135), (5, 4206681), (9, 2337045), (15, 1402227), (27, 779015), (45, 467409), (135, 155803), (347, 60615), (449, 46845), (1041, 20205), (1347, 15615), (1735, 12123), (2245, 9369), (3123, 6735), (4041, 5205)]