65403440

素因数分解:

$2^4\times 5^1\times {\mathrm{317}}^1\times {\mathrm{2579}}^1$

素因数の和:2909

約数の個数: 40

約数和(自身を含む): 152601840

約数和(自身を除く): 87198400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 317, 634, 1268, 1585, 2536, 2579, 3170, 5072, 5158, 6340, 10316, 12680, 12895, 20632, 25360, 25790, 41264, 51580, 103160, 206320, 817543, 1635086, 3270172, 4087715, 6540344, 8175430, 13080688, 16350860, 32701720, 65403440]

約数ペア:

[(1, 65403440), (2, 32701720), (4, 16350860), (5, 13080688), (8, 8175430), (10, 6540344), (16, 4087715), (20, 3270172), (40, 1635086), (80, 817543), (317, 206320), (634, 103160), (1268, 51580), (1585, 41264), (2536, 25790), (2579, 25360), (3170, 20632), (5072, 12895), (5158, 12680), (6340, 10316)]