256216527

素因数分解:

$3^6\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:144

約数の個数: 112

約数和(自身を含む): 478471680

約数和(自身を除く): 222255153

約数列:

[1, 3, 7, 9, 21, 23, 27, 37, 59, 63, 69, 81, 111, 161, 177, 189, 207, 243, 259, 333, 413, 483, 531, 567, 621, 729, 777, 851, 999, 1239, 1357, 1449, 1593, 1701, 1863, 2183, 2331, 2553, 2997, 3717, 4071, 4347, 4779, 5103, 5589, 5957, 6549, 6993, 7659, 8991, 9499, 11151, 12213, 13041, 14337, 15281, 16767, 17871, 19647, 20979, 22977, 26973, 28497, 33453, 36639, 39123, 43011, 45843, 50209, 53613, 58941, 62937, 68931, 85491, 100359, 109917, 117369, 137529, 150627, 160839, 176823, 188811, 206793, 256473, 301077, 329751, 351463, 412587, 451881, 482517, 530469, 620379, 769419, 989253, 1054389, 1237761, 1355643, 1447551, 1591407, 2308257, 3163167, 3713283, 4066929, 4342653, 6924771, 9489501, 11139849, 12200787, 28468503, 36602361, 85405509, 256216527]

約数ペア:

[(1, 256216527), (3, 85405509), (7, 36602361), (9, 28468503), (21, 12200787), (23, 11139849), (27, 9489501), (37, 6924771), (59, 4342653), (63, 4066929), (69, 3713283), (81, 3163167), (111, 2308257), (161, 1591407), (177, 1447551), (189, 1355643), (207, 1237761), (243, 1054389), (259, 989253), (333, 769419), (413, 620379), (483, 530469), (531, 482517), (567, 451881), (621, 412587), (729, 351463), (777, 329751), (851, 301077), (999, 256473), (1239, 206793), (1357, 188811), (1449, 176823), (1593, 160839), (1701, 150627), (1863, 137529), (2183, 117369), (2331, 109917), (2553, 100359), (2997, 85491), (3717, 68931), (4071, 62937), (4347, 58941), (4779, 53613), (5103, 50209), (5589, 45843), (5957, 43011), (6549, 39123), (6993, 36639), (7659, 33453), (8991, 28497), (9499, 26973), (11151, 22977), (12213, 20979), (13041, 19647), (14337, 17871), (15281, 16767)]