20405720178

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{111833}}^1$

素因数の和:111984

約数の個数: 64

約数和(自身を含む): 47238681600

約数和(自身を除く): 26832961422

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 93, 109, 186, 218, 279, 327, 558, 654, 837, 981, 1674, 1962, 2943, 3379, 5886, 6758, 10137, 20274, 30411, 60822, 91233, 111833, 182466, 223666, 335499, 670998, 1006497, 2012994, 3019491, 3466823, 6038982, 6933646, 10400469, 12189797, 20800938, 24379594, 31201407, 36569391, 62402814, 73138782, 93604221, 109708173, 187208442, 219416346, 329124519, 377883707, 658249038, 755767414, 1133651121, 2267302242, 3400953363, 6801906726, 10202860089, 20405720178]

約数ペア:

[(1, 20405720178), (2, 10202860089), (3, 6801906726), (6, 3400953363), (9, 2267302242), (18, 1133651121), (27, 755767414), (31, 658249038), (54, 377883707), (62, 329124519), (93, 219416346), (109, 187208442), (186, 109708173), (218, 93604221), (279, 73138782), (327, 62402814), (558, 36569391), (654, 31201407), (837, 24379594), (981, 20800938), (1674, 12189797), (1962, 10400469), (2943, 6933646), (3379, 6038982), (5886, 3466823), (6758, 3019491), (10137, 2012994), (20274, 1006497), (30411, 670998), (60822, 335499), (91233, 223666), (111833, 182466)]