19717552

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1021}}^1$

素因数の和:1117

約数の個数: 40

約数和(自身を含む): 41059872

約数和(自身を除く): 21342320

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 71, 136, 142, 272, 284, 568, 1021, 1136, 1207, 2042, 2414, 4084, 4828, 8168, 9656, 16336, 17357, 19312, 34714, 69428, 72491, 138856, 144982, 277712, 289964, 579928, 1159856, 1232347, 2464694, 4929388, 9858776, 19717552]

約数ペア:

[(1, 19717552), (2, 9858776), (4, 4929388), (8, 2464694), (16, 1232347), (17, 1159856), (34, 579928), (68, 289964), (71, 277712), (136, 144982), (142, 138856), (272, 72491), (284, 69428), (568, 34714), (1021, 19312), (1136, 17357), (1207, 16336), (2042, 9656), (2414, 8168), (4084, 4828)]