20752005

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{269}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 34473600

約数和(自身を除く): 13721595

約数列:

[1, 3, 5, 15, 37, 111, 139, 185, 269, 417, 555, 695, 807, 1345, 2085, 4035, 5143, 9953, 15429, 25715, 29859, 37391, 49765, 77145, 112173, 149295, 186955, 560865, 1383467, 4150401, 6917335, 20752005]

約数ペア:

[(1, 20752005), (3, 6917335), (5, 4150401), (15, 1383467), (37, 560865), (111, 186955), (139, 149295), (185, 112173), (269, 77145), (417, 49765), (555, 37391), (695, 29859), (807, 25715), (1345, 15429), (2085, 9953), (4035, 5143)]