155978440

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{15173}}^1$

素因数の和:15441

約数の個数: 32

約数和(自身を含む): 352340280

約数和(自身を除く): 196361840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 15173, 30346, 60692, 75865, 121384, 151730, 303460, 606920, 3899461, 7798922, 15597844, 19497305, 31195688, 38994610, 77989220, 155978440]

約数ペア:

[(1, 155978440), (2, 77989220), (4, 38994610), (5, 31195688), (8, 19497305), (10, 15597844), (20, 7798922), (40, 3899461), (257, 606920), (514, 303460), (1028, 151730), (1285, 121384), (2056, 75865), (2570, 60692), (5140, 30346), (10280, 15173)]