19118918

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:421

約数の個数: 48

約数和(自身を含む): 36867600

約数和(自身を除く): 17748682

約数列:

[1, 2, 7, 13, 14, 26, 43, 49, 86, 91, 98, 182, 301, 349, 559, 602, 637, 698, 1118, 1274, 2107, 2443, 3913, 4214, 4537, 4886, 7826, 9074, 15007, 17101, 27391, 30014, 31759, 34202, 54782, 63518, 105049, 195091, 210098, 222313, 390182, 444626, 735343, 1365637, 1470686, 2731274, 9559459, 19118918]

約数ペア:

[(1, 19118918), (2, 9559459), (7, 2731274), (13, 1470686), (14, 1365637), (26, 735343), (43, 444626), (49, 390182), (86, 222313), (91, 210098), (98, 195091), (182, 105049), (301, 63518), (349, 54782), (559, 34202), (602, 31759), (637, 30014), (698, 27391), (1118, 17101), (1274, 15007), (2107, 9074), (2443, 7826), (3913, 4886), (4214, 4537)]