21493930

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{541}}^1$

素因数の和:714

約数の個数: 32

約数和(自身を含む): 40389840

約数和(自身を除く): 18895910

約数列:

[1, 2, 5, 10, 29, 58, 137, 145, 274, 290, 541, 685, 1082, 1370, 2705, 3973, 5410, 7946, 15689, 19865, 31378, 39730, 74117, 78445, 148234, 156890, 370585, 741170, 2149393, 4298786, 10746965, 21493930]

約数ペア:

[(1, 21493930), (2, 10746965), (5, 4298786), (10, 2149393), (29, 741170), (58, 370585), (137, 156890), (145, 148234), (274, 78445), (290, 74117), (541, 39730), (685, 31378), (1082, 19865), (1370, 15689), (2705, 7946), (3973, 5410)]