687537965

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1\times {\mathrm{541}}^1$

素因数の和:869

約数の個数: 32

約数和(自身を含む): 886000896

約数和(自身を除く): 198462931

約数列:

[1, 5, 23, 43, 115, 215, 257, 541, 989, 1285, 2705, 4945, 5911, 11051, 12443, 23263, 29555, 55255, 62215, 116315, 139037, 254173, 535049, 695185, 1270865, 2675245, 3197851, 5978591, 15989255, 29892955, 137507593, 687537965]

約数ペア:

[(1, 687537965), (5, 137507593), (23, 29892955), (43, 15989255), (115, 5978591), (215, 3197851), (257, 2675245), (541, 1270865), (989, 695185), (1285, 535049), (2705, 254173), (4945, 139037), (5911, 116315), (11051, 62215), (12443, 55255), (23263, 29555)]