389946100

素因数分解:

$2^2\times 5^2\times {\mathrm{257}}^1\times {\mathrm{15173}}^1$

素因数の和:15444

約数の個数: 36

約数和(自身を含む): 849531564

約数和(自身を除く): 459585464

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 257, 514, 1028, 1285, 2570, 5140, 6425, 12850, 15173, 25700, 30346, 60692, 75865, 151730, 303460, 379325, 758650, 1517300, 3899461, 7798922, 15597844, 19497305, 38994610, 77989220, 97486525, 194973050, 389946100]

約数ペア:

[(1, 389946100), (2, 194973050), (4, 97486525), (5, 77989220), (10, 38994610), (20, 19497305), (25, 15597844), (50, 7798922), (100, 3899461), (257, 1517300), (514, 758650), (1028, 379325), (1285, 303460), (2570, 151730), (5140, 75865), (6425, 60692), (12850, 30346), (15173, 25700)]