21578870

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{829}}^1$

素因数の和:992

約数の個数: 32

約数和(自身を含む): 41234400

約数和(自身を除く): 19655530

約数列:

[1, 2, 5, 10, 19, 38, 95, 137, 190, 274, 685, 829, 1370, 1658, 2603, 4145, 5206, 8290, 13015, 15751, 26030, 31502, 78755, 113573, 157510, 227146, 567865, 1135730, 2157887, 4315774, 10789435, 21578870]

約数ペア:

[(1, 21578870), (2, 10789435), (5, 4315774), (10, 2157887), (19, 1135730), (38, 567865), (95, 227146), (137, 157510), (190, 113573), (274, 78755), (685, 31502), (829, 26030), (1370, 15751), (1658, 13015), (2603, 8290), (4145, 5206)]