203157215

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 264150720

約数和(自身を除く): 60993505

約数列:

[1, 5, 19, 53, 95, 157, 257, 265, 785, 1007, 1285, 2983, 4883, 5035, 8321, 13621, 14915, 24415, 40349, 41605, 68105, 158099, 201745, 258799, 766631, 790495, 1293995, 2138497, 3833155, 10692485, 40631443, 203157215]

約数ペア:

[(1, 203157215), (5, 40631443), (19, 10692485), (53, 3833155), (95, 2138497), (157, 1293995), (257, 790495), (265, 766631), (785, 258799), (1007, 201745), (1285, 158099), (2983, 68105), (4883, 41605), (5035, 40349), (8321, 24415), (13621, 14915)]