353177780

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1\times {\mathrm{821}}^1$

素因数の和:1124

約数の個数: 48

約数和(自身を含む): 752761296

約数和(自身を除く): 399583516

約数列:

[1, 2, 4, 5, 10, 20, 137, 157, 274, 314, 548, 628, 685, 785, 821, 1370, 1570, 1642, 2740, 3140, 3284, 4105, 8210, 16420, 21509, 43018, 86036, 107545, 112477, 128897, 215090, 224954, 257794, 430180, 449908, 515588, 562385, 644485, 1124770, 1288970, 2249540, 2577940, 17658889, 35317778, 70635556, 88294445, 176588890, 353177780]

約数ペア:

[(1, 353177780), (2, 176588890), (4, 88294445), (5, 70635556), (10, 35317778), (20, 17658889), (137, 2577940), (157, 2249540), (274, 1288970), (314, 1124770), (548, 644485), (628, 562385), (685, 515588), (785, 449908), (821, 430180), (1370, 257794), (1570, 224954), (1642, 215090), (2740, 128897), (3140, 112477), (3284, 107545), (4105, 86036), (8210, 43018), (16420, 21509)]