81587961

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 149210880

約数和(自身を除く): 67622919

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 79, 91, 97, 117, 169, 237, 273, 291, 507, 553, 679, 711, 819, 873, 1027, 1183, 1261, 1521, 1659, 2037, 3081, 3549, 3783, 4977, 6111, 7189, 7663, 8827, 9243, 10647, 11349, 13351, 16393, 21567, 22989, 26481, 40053, 49179, 53641, 64701, 68967, 79443, 93457, 99619, 114751, 120159, 147537, 160923, 280371, 298857, 344253, 482769, 697333, 841113, 896571, 1032759, 1295047, 2091999, 3885141, 6275997, 9065329, 11655423, 27195987, 81587961]

約数ペア:

[(1, 81587961), (3, 27195987), (7, 11655423), (9, 9065329), (13, 6275997), (21, 3885141), (39, 2091999), (63, 1295047), (79, 1032759), (91, 896571), (97, 841113), (117, 697333), (169, 482769), (237, 344253), (273, 298857), (291, 280371), (507, 160923), (553, 147537), (679, 120159), (711, 114751), (819, 99619), (873, 93457), (1027, 79443), (1183, 68967), (1261, 64701), (1521, 53641), (1659, 49179), (2037, 40053), (3081, 26481), (3549, 22989), (3783, 21567), (4977, 16393), (6111, 13351), (7189, 11349), (7663, 10647), (8827, 9243)]