19976836

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{1571}}^1$

素因数の和:1620

約数の個数: 36

約数和(自身を含む): 40538736

約数和(自身を除く): 20561900

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 187, 289, 374, 578, 748, 1156, 1571, 3142, 3179, 6284, 6358, 12716, 17281, 26707, 34562, 53414, 69124, 106828, 293777, 454019, 587554, 908038, 1175108, 1816076, 4994209, 9988418, 19976836]

約数ペア:

[(1, 19976836), (2, 9988418), (4, 4994209), (11, 1816076), (17, 1175108), (22, 908038), (34, 587554), (44, 454019), (68, 293777), (187, 106828), (289, 69124), (374, 53414), (578, 34562), (748, 26707), (1156, 17281), (1571, 12716), (3142, 6358), (3179, 6284)]