28053389

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:237

約数の個数: 32

約数和(自身を含む): 36201984

約数和(自身を除く): 8148595

約数列:

[1, 7, 13, 41, 73, 91, 103, 287, 511, 533, 721, 949, 1339, 2993, 3731, 4223, 6643, 7519, 9373, 20951, 29561, 38909, 52633, 54899, 97747, 272363, 308279, 384293, 684229, 2157953, 4007627, 28053389]

約数ペア:

[(1, 28053389), (7, 4007627), (13, 2157953), (41, 684229), (73, 384293), (91, 308279), (103, 272363), (287, 97747), (511, 54899), (533, 52633), (721, 38909), (949, 29561), (1339, 20951), (2993, 9373), (3731, 7519), (4223, 6643)]