2557555

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1$

素因数の和:116

約数の個数: 48

約数和(自身を含む): 4251744

約数和(自身を除く): 1694189

約数列:

[1, 5, 7, 11, 13, 35, 49, 55, 65, 73, 77, 91, 143, 245, 365, 385, 455, 511, 539, 637, 715, 803, 949, 1001, 2555, 2695, 3185, 3577, 4015, 4745, 5005, 5621, 6643, 7007, 10439, 17885, 28105, 33215, 35035, 39347, 46501, 52195, 73073, 196735, 232505, 365365, 511511, 2557555]

約数ペア:

[(1, 2557555), (5, 511511), (7, 365365), (11, 232505), (13, 196735), (35, 73073), (49, 52195), (55, 46501), (65, 39347), (73, 35035), (77, 33215), (91, 28105), (143, 17885), (245, 10439), (365, 7007), (385, 6643), (455, 5621), (511, 5005), (539, 4745), (637, 4015), (715, 3577), (803, 3185), (949, 2695), (1001, 2555)]