257029227

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^3\times {\mathrm{619}}^1$

素因数の和:674

約数の個数: 64

約数和(自身を含む): 472192000

約数和(自身を除く): 215162773

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 169, 189, 273, 351, 507, 619, 819, 1183, 1521, 1857, 2197, 2457, 3549, 4333, 4563, 5571, 6591, 8047, 10647, 12999, 15379, 16713, 19773, 24141, 31941, 38997, 46137, 56329, 59319, 72423, 104611, 116991, 138411, 168987, 217269, 313833, 415233, 506961, 732277, 941499, 1359943, 1520883, 2196831, 2824497, 4079829, 6590493, 9519601, 12239487, 19771479, 28558803, 36718461, 85676409, 257029227]

約数ペア:

[(1, 257029227), (3, 85676409), (7, 36718461), (9, 28558803), (13, 19771479), (21, 12239487), (27, 9519601), (39, 6590493), (63, 4079829), (91, 2824497), (117, 2196831), (169, 1520883), (189, 1359943), (273, 941499), (351, 732277), (507, 506961), (619, 415233), (819, 313833), (1183, 217269), (1521, 168987), (1857, 138411), (2197, 116991), (2457, 104611), (3549, 72423), (4333, 59319), (4563, 56329), (5571, 46137), (6591, 38997), (8047, 31941), (10647, 24141), (12999, 19773), (15379, 16713)]