19987604

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1277}}^1$

素因数の和:1344

約数の個数: 48

約数和(自身を含む): 44085888

約数和(自身を除く): 24098284

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 43, 52, 86, 91, 172, 182, 301, 364, 559, 602, 1118, 1204, 1277, 2236, 2554, 3913, 5108, 7826, 8939, 15652, 16601, 17878, 33202, 35756, 54911, 66404, 109822, 116207, 219644, 232414, 384377, 464828, 713843, 768754, 1427686, 1537508, 2855372, 4996901, 9993802, 19987604]

約数ペア:

[(1, 19987604), (2, 9993802), (4, 4996901), (7, 2855372), (13, 1537508), (14, 1427686), (26, 768754), (28, 713843), (43, 464828), (52, 384377), (86, 232414), (91, 219644), (172, 116207), (182, 109822), (301, 66404), (364, 54911), (559, 35756), (602, 33202), (1118, 17878), (1204, 16601), (1277, 15652), (2236, 8939), (2554, 7826), (3913, 5108)]