81690015

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29123}}^1$

素因数の和:29159

約数の個数: 32

約数和(自身を含む): 150978816

約数和(自身を除く): 69288801

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 29123, 87369, 145615, 320353, 436845, 495091, 961059, 1485273, 1601765, 2475455, 4805295, 5446001, 7426365, 16338003, 27230005, 81690015]

約数ペア:

[(1, 81690015), (3, 27230005), (5, 16338003), (11, 7426365), (15, 5446001), (17, 4805295), (33, 2475455), (51, 1601765), (55, 1485273), (85, 961059), (165, 495091), (187, 436845), (255, 320353), (561, 145615), (935, 87369), (2805, 29123)]