28259686

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 56060928

約数和(自身を除く): 27801242

約数列:

[1, 2, 7, 13, 14, 23, 26, 43, 46, 86, 91, 157, 161, 182, 299, 301, 314, 322, 559, 598, 602, 989, 1099, 1118, 1978, 2041, 2093, 2198, 3611, 3913, 4082, 4186, 6751, 6923, 7222, 7826, 12857, 13502, 13846, 14287, 25277, 25714, 28574, 46943, 47257, 50554, 87763, 89999, 93886, 94514, 155273, 175526, 179998, 310546, 328601, 614341, 657202, 1086911, 1228682, 2018549, 2173822, 4037098, 14129843, 28259686]

約数ペア:

[(1, 28259686), (2, 14129843), (7, 4037098), (13, 2173822), (14, 2018549), (23, 1228682), (26, 1086911), (43, 657202), (46, 614341), (86, 328601), (91, 310546), (157, 179998), (161, 175526), (182, 155273), (299, 94514), (301, 93886), (314, 89999), (322, 87763), (559, 50554), (598, 47257), (602, 46943), (989, 28574), (1099, 25714), (1118, 25277), (1978, 14287), (2041, 13846), (2093, 13502), (2198, 12857), (3611, 7826), (3913, 7222), (4082, 6923), (4186, 6751)]