66777615

素因数分解:

$3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:151

約数の個数: 96

約数和(自身を含む): 131616576

約数和(自身を除く): 64838961

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 53, 61, 81, 85, 135, 153, 159, 183, 243, 255, 265, 305, 405, 459, 477, 549, 765, 795, 901, 915, 1037, 1215, 1377, 1431, 1647, 2295, 2385, 2703, 2745, 3111, 3233, 4131, 4293, 4505, 4941, 5185, 6885, 7155, 8109, 8235, 9333, 9699, 12879, 13515, 14823, 15555, 16165, 20655, 21465, 24327, 24705, 27999, 29097, 40545, 46665, 48495, 54961, 64395, 72981, 74115, 83997, 87291, 121635, 139995, 145485, 164883, 218943, 251991, 261873, 274805, 364905, 419985, 436455, 494649, 785619, 824415, 1094715, 1259955, 1309365, 1483947, 2473245, 3928095, 4451841, 7419735, 13355523, 22259205, 66777615]

約数ペア:

[(1, 66777615), (3, 22259205), (5, 13355523), (9, 7419735), (15, 4451841), (17, 3928095), (27, 2473245), (45, 1483947), (51, 1309365), (53, 1259955), (61, 1094715), (81, 824415), (85, 785619), (135, 494649), (153, 436455), (159, 419985), (183, 364905), (243, 274805), (255, 261873), (265, 251991), (305, 218943), (405, 164883), (459, 145485), (477, 139995), (549, 121635), (765, 87291), (795, 83997), (901, 74115), (915, 72981), (1037, 64395), (1215, 54961), (1377, 48495), (1431, 46665), (1647, 40545), (2295, 29097), (2385, 27999), (2703, 24705), (2745, 24327), (3111, 21465), (3233, 20655), (4131, 16165), (4293, 15555), (4505, 14823), (4941, 13515), (5185, 12879), (6885, 9699), (7155, 9333), (8109, 8235)]