15381925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 22498560

約数和(自身を除く): 7116635

約数列:

[1, 5, 13, 19, 25, 47, 53, 65, 95, 235, 247, 265, 325, 475, 611, 689, 893, 1007, 1175, 1235, 1325, 2491, 3055, 3445, 4465, 5035, 6175, 11609, 12455, 13091, 15275, 17225, 22325, 25175, 32383, 47329, 58045, 62275, 65455, 161915, 236645, 290225, 327275, 615277, 809575, 1183225, 3076385, 15381925]

約数ペア:

[(1, 15381925), (5, 3076385), (13, 1183225), (19, 809575), (25, 615277), (47, 327275), (53, 290225), (65, 236645), (95, 161915), (235, 65455), (247, 62275), (265, 58045), (325, 47329), (475, 32383), (611, 25175), (689, 22325), (893, 17225), (1007, 15275), (1175, 13091), (1235, 12455), (1325, 11609), (2491, 6175), (3055, 5035), (3445, 4465)]