156955580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{21739}}^1$

素因数の和:21786

約数の個数: 36

約数和(自身を含む): 347883480

約数和(自身を除く): 190927900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 21739, 43478, 86956, 108695, 217390, 413041, 434780, 826082, 1652164, 2065205, 4130410, 7847779, 8260820, 15695558, 31391116, 39238895, 78477790, 156955580]

約数ペア:

[(1, 156955580), (2, 78477790), (4, 39238895), (5, 31391116), (10, 15695558), (19, 8260820), (20, 7847779), (38, 4130410), (76, 2065205), (95, 1652164), (190, 826082), (361, 434780), (380, 413041), (722, 217390), (1444, 108695), (1805, 86956), (3610, 43478), (7220, 21739)]