19513552

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71741}}^1$

素因数の和:71766

約数の個数: 20

約数和(自身を含む): 40032036

約数和(自身を除く): 20518484

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 71741, 143482, 286964, 573928, 1147856, 1219597, 2439194, 4878388, 9756776, 19513552]

約数ペア:

[(1, 19513552), (2, 9756776), (4, 4878388), (8, 2439194), (16, 1219597), (17, 1147856), (34, 573928), (68, 286964), (136, 143482), (272, 71741)]