409997240

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{39883}}^1$

素因数の和:40151

約数の個数: 32

約数和(自身を含む): 926106480

約数和(自身を除く): 516109240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 39883, 79766, 159532, 199415, 319064, 398830, 797660, 1595320, 10249931, 20499862, 40999724, 51249655, 81999448, 102499310, 204998620, 409997240]

約数ペア:

[(1, 409997240), (2, 204998620), (4, 102499310), (5, 81999448), (8, 51249655), (10, 40999724), (20, 20499862), (40, 10249931), (257, 1595320), (514, 797660), (1028, 398830), (1285, 319064), (2056, 199415), (2570, 159532), (5140, 79766), (10280, 39883)]