20667405

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{193}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 37154880

約数和(自身を除く): 16487475

約数列:

[1, 3, 5, 11, 15, 33, 55, 59, 121, 165, 177, 193, 295, 363, 579, 605, 649, 885, 965, 1815, 1947, 2123, 2895, 3245, 6369, 7139, 9735, 10615, 11387, 21417, 23353, 31845, 34161, 35695, 56935, 70059, 107085, 116765, 125257, 170805, 350295, 375771, 626285, 1377827, 1878855, 4133481, 6889135, 20667405]

約数ペア:

[(1, 20667405), (3, 6889135), (5, 4133481), (11, 1878855), (15, 1377827), (33, 626285), (55, 375771), (59, 350295), (121, 170805), (165, 125257), (177, 116765), (193, 107085), (295, 70059), (363, 56935), (579, 35695), (605, 34161), (649, 31845), (885, 23353), (965, 21417), (1815, 11387), (1947, 10615), (2123, 9735), (2895, 7139), (3245, 6369)]